![Thumbnail: [Volume 15, 1882 page 83]](/journals/rsnz/images/rsnz_15/thumbnails/rsnz_15_00_0107_0083_ac_02.gif)
Genus Moera.
Moera incerta, sp. nov. Pl. III., fig. 3.
None of the segments of pleon or pereion produced into teeth. Coxæ shallower than their respective segments. Basal joint of upper antenna stout, narrowing distally, second joint only slightly longer than the first, third joint short; flagellum shorter than peduncle, about as long as the basal joint and half the second; secondary appendage rather more than half as long as the flagellum; setæ on the antenna short and very fine. Lower antenna shorter than the upper, slender; peduncle as long as that of upper antenna, last joint of peduncle slightly shorter than the preceding joint, flagellum short, not quite so long as the last joint of the peduncle, setæ short and delicate. First pair of gnathopoda having the carpus about as large as the propodos; its outer edge with a shallow notch towards the distal end, inner edge densely fringed with setæ, small tufts of setæ scattered over the joint; propodos ovate, not very hairy, palm slightly convex, fringed with short setæ, imperfectly defined by one or two stout short setæ; dactylos slender acute, with one or two long setæ at its base. Second pair of gnathopoda very large, carpus rather small subtriangular, propodos very large, subrectangular, slightly narrowed at the base, inner margin slightly sinuous, with a few small tufts of setæ
![Thumbnail: [Volume 15, 1882 page 84]](/journals/rsnz/images/rsnz_15/thumbnails/rsnz_15_00_0108_0084_ac_02.gif)
chiefly on the proximal half; on the outer margin mostly towards the distal part are also a few small tufts of setæ, but these lie close along the joint and are very easily overlooked. Palm transverse defined by a short stout tooth and having short stout setæ along the whole palm. Dactylos thick and strong, not longer than palm. First two pairs of pereiopoda subequal, rather slender, last three broad, increasing slightly in size posteriorly, basos moderately large subrectangular, anterior edge with a few small setæ, posterior edge minutely serrate, a very minute seta arising at each serration, meros broad serrated, with moderately long strong setæ, carpus expanding somewhat distally, setose; propodos setose on anterior side only, numerous strong setæ arising at the base of the dactylos; dactylos considerably narrower than propodos, ending in two sharp points, the principal one longer and more curved than the other. Inferior edges of first three segments of pleon supplied with several small setæ. Posterior pair of pleopoda only reaching very slightly beyond the two preceding pairs, of which the first pair is slender, having the peduncle considerably longer than the rami, rami with long strong setæ at their extremities; second pair stouter, rami with similar long strong setæ at end; third pair having the rami broad and setose more especially on the outer edge. Telson double, each half concave posteriorly with two long setæ arising from the hollow, and having another hollow on the outer side towards the distal end with a single seta springing from the hollow.
Length, about ⅕ of an inch.
Hab. Lyttelton Harbour.
This species is very close to M. quadrimanus, Dana, M. grossimanus, Montagu, M. viridis, Haswell, M. truncatipes, Spinola, but differs from all in the form of the second pair of gnathopoda. In this respect it closely resembles M. blanchardi, Spence Bate, but differs in having the basa of the three posterior pairs of pereiopoda dilated, in having the secondary appendage of upper antenna not so long as the primary flagellum, and in other points. It also resembles M. tenella, Dana, but that species has the base joint of upper antenna “not stout, second very long;” the two species also appear to differ somewhat in the form of the second gnathopoda, and also in the length of the posterior pair of pleopoda.