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Description of Plates XVIII-XXIII.
Plate XVIII.—Map of Oamaru and district, showing the diatom outcrops or faces at Cormack's siding, Jackson's, Bain's, and Allen's farms. The dotted lines show the area of diatomaceous deposit as mapped out by Mr. Isdaile. Diatom earth has also been ploughed up in Cave Valley and on the east side of the Waiareka Creek. None has, however, yet been found on the west side of the creek, nor on the hills near Totara Round Hill. A small deposit occurs just where the road crosses the railway-bridge to Enfield, but it is of no importance, and is much mixed up with the calcareous débris of the disintegrated limestone.
Plate XIX. has been described in the letterpress. (See p. 295.)
Plate XX.—All these figures represent the diatoms of the different deposits, with their characteristic appearance, as shown under a power of about 75 diameters. To have been quite accurate, those in Jackson's and Bain's should have been shown rather larger.
Fig. 1. Deposit from Cormack's siding.
" 2. " H. Allen's farm.
" 3. " Totara estate.
" 4. " Jackson's farm.
" 5. " Bain's highest deposit.
" 6. Foraminifera from Jackson's and Bain's farms.
Fig. 1. Triceratium venulosum, var. major, Gr. and St., n. sp.
" 2. " coscinoides, Gr. and St., n. sp.
3 3. " rugosum, Gr. and St., n. sp.
" 4. " dobreèanum, var. nova-zealandica, Gr. and St., n. sp.
" 5. Trinacria simulacrum, Gr. and St., n. sp.
" 6. Triceratium morlandii, Gr. and St., n. sp.
" 7. " oamaruense, Gr. and St., n. sp.
Fig. 8. Triceratium crenulatum, forma gibbosa (?), Gr. and St., n. sp.
" 9. " " Gr. and St., n. sp.
" 10. Rutilaria radiata, Gr. and St., n. sp.
" 11. Actinoptychus vulgaris, Schum., var. maculata, Gr. and St., n. sp.
" 12. Auliscus oamaruensis, Gr. and St., n. sp.
" 13. Aulacodiscus janischii, Gr. and St., n. sp.
" 14. Eunotogramma weissei, Ehr., var. producta, Gr. and St. (Valve.)
" 15. Eunotogramma weissei, Ehr., var. producta, Gr. and St. (Frustule.)
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Fig. 16. Trinacria ventricosa, Gr. and St., n. sp. (Primary valve.)
" 17. " " " " (Secondary valve.)
" 18. Pseudo-rutilaria monile, Gr. and St., n. sp., n. gen.
" 19. Hemiaulus ornithocephalus (?), Grev., var. (?). (Frustule.)
[In this figure half of the adjoining valve is drawn, showing its beak-like claw or spine, by which the opposite valves are attached.]
" 20. Kittonia eláborata, Gr. and St., n. sp., n. gen.
" 21. Navicula margino-punctata, Gr. and St., n. sp.
" 22. Triceratium barbadense (?), Grev.
" 23. Aulacodiscus sollitianus, Norm., var. nova-zealandica, Gr. and St., n. var.
List of Diatoms found by Messrs. Grove and Sturt in the Diatomaceous Ooze from Cormack's Siding, Oamaru, and published in the “Quekett Journal” (alphabetically arranged).
Actinoptychus nitidus, Grun. (Heliopelta nitida, Grev.).
A. pulchellus, Grun., var. tenera.
A. simbirskianus, A. Schm.
A. splendens (Shadbolt), Ralfs.
A. (splendens, var.?) glabratus, Grun.
A. (glabratus, var.?) elegantulus, n. sp., Gr. and St.
A. undulatus, Ehr.
A. (undulatus, Ehr., var.?) constrictus, n. sp., Gr. and St.
A. vulgaris, Schum., var. maculata, n. var., Gr. and St.
A. wittianus, Janisch.
Amphipropra rugosa, Pet.
A. (?) cornuta, Chase.
Amphora cingulata, Cleve.
Amp. contracta, Grun. (var.?)
Amp. crassa, Greg.
Amp. furcata, Leud. Fort.
Amp. interlineata, n. sp., Gr. and St.
Amp. labuensis, Cleve.
Amp. obtusa, Greg.
Amp. (sp.?)
Amp. subpunctata, n. sp., Gr. and St.
Amp. tesselata, n. sp., Gr. and St.
Anaulus birostratus, Grun.
An. (?) subconstrictus, Gr. and St., n. sp.
Anthodiscus florèatus, n. sp., nov. genus, Gr. and St.
Arachnoidiscus ehrenbergii, Bail.
Arach. indicus, E.
Asterolampra decora, Grev.
Ast. marylandica, Ehr.
Ast. uraster, n. sp., Gr. and St.
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Aulacodiscus amænus, Grev., var. sparso-radiata, n. var., Gr. and St.
Aulac. angulatus, Grev.
Aulac. barbadensis, Ralfs, “Pritch.”
Aulac. cellulosus, n. sp., Gr. and St.
Aulac. cellulosus, Gr. and St., var. plana.
Aulac. comterii, Arnott, var. oamaruensis, Gr. and St.
Aulac. convexus, n. sp., Gr. and St.
Aulac. crux, Ehr.
Aulac. elegans, n. sp., Gr. and St.
Aulac. huttonii, n. sp., Gr. and St.
Aulac. janischii, n. sp., Gr. and St.
Aulac. janischii, Gr. and St., var. abrupta.
Aulac. margaritaceus, Ralfs.
Aulac. margaritaceus, Ralfs, var. debyana, Gr. and St.
Aulac. margaritaceus, Ralfs, var. undosa, Gr. and St.
Aulac. radiosus, n. sp., Gr. and St.
Aulac. rattrayii, n. sp., Gr. and St.
Aulac. sollitianus, Norm., var. nova-zealandica, n. var., Gr. and St.
Aulac. spectabilis, Grev.
Auliscus barbadensis, Grev.
Aul. cælatus, Bail.
Aul. fenestratus, n. sp., Gr. and St.
Aul. grevillei, Jan.
Aul. hardmanianus, Grev.
Aul. inflatus, n. sp., Gr. and St.
Aul. lacunosus, n. sp., Gr. and St.
Aul. lineatus, n. sp., Gr. and St.
Aul. notatus, Grev.
Aul. oamaruensis, n. sp., Gr. and St.
Aul. propinquus, n. sp., Gr. and St.
Aul. pruinosus, Bail.
Aul. (pruinosus, var.?) confluens, Grun.
Aul. punctatus, Grev.
Aul. punctatus, Bail., var.
Aul. racemosus, Ralfs.
Biddulphia chinensis, Grev.
B. dissipata, n. sp., Gr. and St.
B. elegantula, Grev.
B. (?) fossa, n. sp., Gr. and St.
B. lata, n. sp., Gr. and St.
B. oamaruensis, n. sp., Gr. and St.
B. pedalis, n. sp., Gr. and St.
B. podagrosa, Grev., var.
B. punctata, Grev.
B. reticulata, Roper, forma trigona.
B. tenera, n. sp., Gr. and St.
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To illustrate Paper by H. A. de Lautour.
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To illustrate Paper by H. A. de Lautour.
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To illustrate Paper by H. A. de Lautour.
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B. tuomeyii, Bail.
B. vittata, n. sp., Gr. and St.
B. (Cerataulus ?) reversa, n. sp., Gr. and St.
Brightwellia pulchra, Grun.
Campyloneis (grevillei, var. ?) argus, Grun.
Cerataulus johnsonianus (Grev.), Cl.
Cer. marginatus, n. sp., Gr. and St.
Cer. polymorphus, Kütz., forma minor.
Cer. subangulatus, n. sp., Gr. and St.
Chætoceras gastridium (Ehr.), Grun., var.
Clavicula aspicephala, Paut.
Cocconeis barbadensis, Grev.
Coc. costatata, Greg.
Coc. naviculoides, Grev.
Coc. nodulifer, n. sp., Gr. and St.
Coc. pseudo-marginata, var. intermedia, Grun.
Coscinodiscus angulatus, Grev.
C. bulliens, A. Schm.
C. centralis, Greg.
C. concavus, Greg., nec Ehr.
C. curvatulus, Grun.
C. decrescens, Grun.
C. eccentricus, Ehr.
C. elegans, Grev.
C. elegans, Grev., var. spinifera, Gr. and St.
C. griseus, Grev., var. galopagensis, Grun.
C. inequalis, n. sp., Gr. and St.
C. kützingii, A. Schm.
C. marginatus, Ehr.
C. minor, Ehr.
C. nitidus, Greg.
C. oamaruensis, n. sp., Gr. and St.
C. oblongus, Grev.
C. oculus iridis, Ehr.
C. radiatus, Ehr.
C. radiosus, Grun.
C. rothii, Grun.
C. scintillans, Grev.
C. subtilis, Ehr.
C. subtilis, var. symbolophora, Grun.
Cosmiodiscus normanianus, Grev.
Craspedoporus elegans, n. sp., Gr. and St.
Dicladia capreolus, Ehr.
Dimeregramma fulvum (Greg.), Ralfs.
Donkinia antiqua, n. sp., Gr. and St.
Entogonia davyana, Grev.
Eunotogramma (?) bivittata, Grun. and Paut.
Eunotogramma weissei, Ehr., var. producta, n. var., Gr. and St.
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Euodia janischii, Grun.
E. striata, n. sp., Gr. and St.
Gephyria incurvata, Arnott.
Glyphodesmis marginata, n. sp., Gr. and St.
Glyphodiscus scintillans, A. Schm.
Glypho. stellatus, Grev.
Goniothecium odontella, Ehr.
Grammatophora oceanica, Ehr.
Hemiaulus amplectans, n. sp., Gr. and St.
Hem. amplectans, var. major, n. sp., Gr. and St.
Hem. angustus, Grev.
Hem. barbadensis, Grun.
Hem. dissimilis, n. sp., Gr. and St.
Hem. includens (Ehr.), Grun.
Hem. lyriformis, Grev.
Hem. ornithocephalus, Grev.
Hem. polymorphus, Grun.
Hem. (?) tenuicornis, Grev.
Hyalodiscus arcticus, Grun.
Hyal. radiatus (O'Meara), Grun.
Hyal. subtilis, Bail.
Huttonia alternans, n. gen., n. sp., Gr. and St.
Hutt. virgata, n. gen., n. sp., Gr. and St.
Isthmia enervis, Ehr.
Kittonia elaborata, n. gen., n. sp., Gr. and St.
Kitt. virgata, n. gen., n. sp., Gr. and St.
Lampriscus (?) debyii, n. sp., Gr. and St.
Liradiscus ovalis, Grev.
Mastogloia reticulata, Grun.
Melosira borreri, W. S.
Mel. clavigera, Grun.
Mel. oamaruensis, n. sp., Gr. and St.
Mel. sol, (Ehr.), Kütz.
Mel. westii, W. S.
Nitzschia antiqua, n. sp., Gr. and St.
Nit. grundlerii, Grun.
Navicula apis, Ehr.
Nav. biconstricta, n. sp., Gr. and St.
Nav. braziliensis, Grun.
Nav. decora, n. sp., Gr. and St.
Nav. definita, n. sp., Gr. and St.
Nav. dispersa, n. sp., Gr. and St.
Nav. gemmata, Grev.
Nav. (Alloneis ?) grundlerii, Cleve and Grun.
Nav. inelegans, n. sp., Gr. and St.
Nav. interlineata, n. sp., Gr. and St.
Nav. margino-lineata, n. sp., Gr. and St.
Nav. margino-punctata, n. sp., Gr. and St.
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Nav. placita, n. sp., Gr. and St.
Nav. prætexta, Ehr.
Nav. sandriana, Grun.
Nav. smithii, var. nitescens, Greg.
Nav. sparsipunctata, n. sp., Gr. and St.
Nav. spathifera, n. sp., Gr. and St.
Nav. trilineata, n. sp., Gr. and St.
Orthoneis splendida (Greg.), Grun.
Paralia sulcata (Ehr.), Cleve (Orthorisa marina, “S.B.D.”).
Plagiogramma (constrictum, var?) nancoorense, Grun.
Plag. neogradense, Pautocsek.
Plag. tesselatum, Grev.
Podosira hormoides (Mont.), Grun.
Pod. maxima, Kütz.
Porodiscus hirsutus, n. sp., Gr. and St.
Por. interruptus, n. sp., Gr. and St.
Pseudo-rutilaria monile, n. sub-gen., n. sp., Gr. and St.
Pyxidicula cruciata, Ehr.
Pyxilla dubia, Grun.
Pyx. johnsoniana, Grev.
Pyx. reticulata, n. sp., Gr. and St.
Pyx. (?) (Pterotheca, Kitt.) aculeifera, Grun.
Rutilaria epsilon, Grev.
Rut. epsilon, var. tenuis, n. sp., Gr. and St.
Rut. lanceolata, n. sp., Gr. and St.
Rut. radiata, n. sp., Gr. and St.
Stephanogonia danica (Kitt.), Grun., var.
Stephanopyxis barbadensis (Grev.), Grun.
St. ferox (Grev.), Grun.
St. grunnowii, n. sp., Gr. and St.
St. turris (Grev.), Grun.
St. turris, var. brevispina, Grun. (And numerous other forms belonging to Stephanopyxis.)
Stictodesmis australis, Grev.
Stictodiscus californicus, Grev., var. areolata, Grun.
Stict. californicus, var. nitida, n. var., Gr. and St.
Stict. hardmanianus, Grev., var. megapora, n. var., Gr. and St.
Stoschia (?) punctata, n. sp., Gr. and St.
Synedra crystallina (Ag.), Kütz.
Terpsinoe americana, Bail.
Terpsinoe americana, Bail., forma trigona, Pautoc.
Triceratium americanum, Ralfs.
T. americanum, var. quadrata, n. var., Gr. and St.
T. arcticum, Bright.
T. arcticum, var. permagnum, Janisch.
T. arcticum, Brightw., forma quinquelobata.
T. ausliscoides, n. sp., Gr. and St.
T. barbadense, Grev.
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T. bimarginatum, n. sp., Gr. and St.
T. capitatum, Ralfs.
T. castellatum, West.
T. concinnum, Grev.
T. condecorum, Ehr.
T. cordiferum, n. sp., Gr. and St.
T. coscinoide, n. sp., Gr. and St.
T. coscinoide, var. quadrata, n. sp., Gr. and St.
T. crenulatum, n. sp., Gr. and St.
T. crenulatum, forma gibbosa, n. sp., Gr. and St.
T. denticulatum, Grev.
T. divisum, Grun.
T. dobreèanum, Grev., var. nov.-zealandica, n. var., Gr. and St.
T. eccentricum, n. sp., Gr. and St.
T. exornatum, Grev.
T. favus, Ehr.
T. favus, var. quadrata, Grun.
T. favus, (Ehr.), var. pentagona.
T. grande, Brightw.
T. grande (B.), forma quadrata.
T. harrisonianum, Norm. and Grev.
T. inelegans, Grev., var.
T. intermedium, n. sp., Gr. and St.
T. kinkerianum, Witt.
T. lineatum, Grev.
T. lineatum with two processes, Grev., var.
T. lobatum, Grev.
T. montereyii, Brightw.
T. morlandii, n. sp., Gr. and St.
T. neglectum, Grev.
T. nitescens, Grev.
T. oamaruense, n. sp., Gr. and St.
T. obesum, Grev.
T. papillatum, n. sp., Gr. and St.
T. parallelum (Ehr.), Grev., forma trigona, A. Schm.
T. parallelum, forma trigona, var. gibbosa, Gr. and St.
T. parallelum, forma quadrata = Amphitetras parallelum (Ehr.), Grev.
T. plumosum, Grev.
T. pseudo-nervatum, n. sp., Gr. and St.
T. rectangulare, n. sp., Gr. and St.
T. repletum, Grev.
T. rotundatum, Grev.
T. rugosum, n. sp., Gr. and St.
T. sexapartitum, n. sp., Gr. and St.
T. shadboltianum, Grev.
T. spinosum, Bail., var. ornata, n. var., Gr. and St.
T. stokesianum, Grev.
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T. trisulcum, Bailey.
T. unguiculatum, Grev.
T. venosum, Bright.
T. venulosum, Grev., var. major, n. var., Gr. and St.
T. weissii, Grun.
T. weiseflogii, n. sp., Gr. and St.
T. parallelum (Ehr.), Grev., with seven angles, Gr. and St.
T. parallelum (Ehr.), var. gibbosa, forma ovalis, Gr. and St.
Trinacria ligulata (Grev.), Gr. and St.
Trin. pileolus, var. gutlandica, Grun.
Trin. simulacrum, n. sp., Gr. and St.
Trin. ventricosa, n. sp., Gr. and St.
Xanthiopyxis oblonga, Ehr.
X. constricta, Ehr.