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Discussion
Whilst these differences are not sufficient in my opinion to warrant a separate species, particularly on such scanty material, the differences in the propods of peraeopods 1 and 2 cannot be completely disregarded. Granting varietal rank seems the most satisfactory course until further material is available.
Liljeborgia barhami n.sp. (Figs. 184–201).
Pleon segment 1 has 1 very small tooth dorsally, 1 strong dorsal spine on each of urosome segments 1 and 2.
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Text-Fig 13.—Liljeborgia akaroica var. maria, n.var. Male. 183—Peraeopod 2. Liljeborgia barhami n. sp. Female. 184—Peraeopod 1 sideplate. 185—Peraeopod 2. 186—Peraeopod 2 merus and carpus. 187—Peraeopod 2 propod posterior margin and setae. 188—Peraeopod 3 sideplate and basos. 189—Peraeopod 4 sideplate and basos. 190—Peraeopod 5 sideplate and basos. 191—Peraeopod 5 basos posterior margin serration. 192—Epimeral plates. 193.— Epimeral plate 3, posterodistal angle. 194—Uropod 1. 195—Uropod 2. 196—Uropod 3.
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Text-Fig. 14.—Liljeborgia barhami n.sp. Female. 197—Maxilliped palp 198—Gnathopod 1 palm and dactylos. 199—Gnathopod 2 palm and dactylos. 200—Urosome segment 1, dorsal spine. 201—Urosome segment 2, dorsal spine (slightly distorted).
This species is like L, aequabilis except in the above and in the following details.
Antennae. First: Flagellum of 15 segments, accessory of 8, superodistal angles of segments a little produced as in L. hansoni. Second: Flagellum of 14 segments, peduncle somewhat like L. hansoni; superior margin of 4th peduncle segment has 4 groups of 3 or so strong spines, inferior similar; 5th has about 7 groups of 2 or 3 spines and several long fine setae superiorly, 4 similar groups inferiorly.
Mouthparts. First Maxillae: Palp a little ovate, 2 setae on outside margin, 5 strong short end spines, several setae on end and inner distal margin. Maxilliped : At least 9 spines down inner margin of outer plate; palm a little less strongly setose than in L. aequabilis especially on propod inner margin; segments comparatively wider and more ovate; propod distally fringed around dactylos base.
Gnathopods. First: Like L. aequabilis but dactylos lacking teeth entirely; 2 defining spines at end of palm where dactylos impinges, row of 4 spines and several setae transversely ½ across propod at slightly lower level; basos posterior margin nearly naked, anterior margin has about 8 long spine-setae. Second: Like Gn. 2 in L. hansoni but dactylos has only 5 teeth; fine setae on outer margin; basos has long fine setae on distal ¼ of inner margin, right along posterior; 1 defining spine to palm, 3 spines on surface and fine setae in row from them up propod parallel to palm.
Peraeopods. First and Second: Like those of L. hansoni; long setae on anterior margin of carpus and merus. Third to Fifth: Like L. hansoni but basos not quite so narrowed proximally, posterior excavations not so marked; a few less spines on other segments especially posteriorly.
Epimeral Plates. More or less like L, akaroica; the 2nd has several long setae ventrally.
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Uropods. First: Peduncle has 4 and 5 spines on dorsal margins, those on distal angles very strong; rami have 4 and 5 spines dorsally. Second: Peduncle has 2 spines on each dorsal margin, 5 and 3 on rami. Third: Peduncle has 3 spines distally, 1 proximally; one ramus has 4 and 5 spines, other is naked. Telson: Like L. aequabilis.
Type P. 107, female.
Locality. “Torrent Bay, No. 5, C. Barham Morris, XII.20”, Chilton Collection. This is in the Nelson region, between Golden and Tasman Bays.