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Family Lucinidae
Myrtea haurangiensis n.sp. (Pl. 26, figs. 7, 8.)
Closest to M. papatikiensis (Marw.) but larger, with shorter, more concave anterior dorsal margin and longer, more convex posterior dorsal margin. Unlike M. papatikiensis, haurangiensis tapers posteriorly and the posterior end is vertically truncated. Sculpture, sharp, spaced concentric lamellae, about 4 per mm., with very faint concentric striations in the interspaces; radial sculpture lacking.
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Fig 1—Micantape
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i pulcherimus n. sp. paratype (N165/507), × 6
Fig 2—Awateria striata n.sp., holotype, × 8.
Fig 3—Austrosassia pahaoacusis n. sp, holotype, × 2.
Fig 4—Antiguraleus maarainsis n. sp, holotype, × 8.
Fig 5—Bathytoma wairarapaensis n. sp, holotype, × 29.
Fig 6—Venustas couperi n. sp. holotype × 19
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Fig 7, 8—Myrtea haurangiensis n. sp, holotype. × 5
Fig 9, 10—Pectunculina aotcana n.sp holotype. × 7.9
Fig 11—Baryspira macbeathi n. sp, holotype. × 13
Fig 12—Micantaper murdochi (Fin) prior n. subsp, holotype, × 27
Fig 13.—Antigui
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aleus rishworthi n. sp. holotype, × 11.8.
Fig 14.—Conospu
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us brockenensis n. sp. holotype. × 3.4
Fig 15.—Verillitra wainuioruensis n. sp., holotype, × 6.9
Fig 16.—Verillitra marwicki n. sp. holotype, × 7
Fig 17.—Micantapex pulcherimus n.sp, holotype, × 4.3.
Fig 18.—Awateria (Mioawateria) pahaoaensis n. subg, n. sp, holotype. × 6.8
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Fig 19.—Pseudoinquis
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itor flemingi n.sp, holotype, × 4.5
Fig 20.—Wairarapa rebeca n. gen. n.sp., holotype, × 7.9.
Fig 21.—Maoricrassus carinatus n. gen, n. sp, holotype, × 7.9.
Fig 22.—Splendrillia whangaimoana n.sp, holotype, × 5.3.
Fig 23.—Neoguraleus hautotaraensis n. sp, holotype, × 11.2
Figs 24. 25—Comitas terrissae n. sp. 24 paratype. × 4.3, 2.5, holotype. × 3.1
Figs. 26. 27.—Mangaoparia powelli n. gen n. sp. 27, holotype, × 10.8; 26. paratype (N165/507), × 11.
Fig 28.—Awateria mwoecnica n. sp. holotype, × 63.
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Anterior adductor impression large, sub-oblong, with a re-entrant nick on the inner side; posterior impression oval, smaller; pallial line distinct and narrow.
Height, 6·2 mm.; length, 7·7 mm.; thickness (1 valve), 1·7 mm.
Localities: N165/507 (Holotype a right valve), G.S. 4517 (2 paratypes). Bell's Creek, Middle Tongaporutuan.
M. papatikiensis was described from Urenuian beds in North Taranaki, a horizon probably a little higher than that of Bell's Creek. M. haurangiensis appears to be intermediate between papatikiensis and the Southlandian supra-flexa Marw. The latter has the umbones further forward than haurangiensis and the anterior dorsal margin more strongly concave.