Genus Moera, Leach.

(Cat. Amphip. Crust. Brit. Mus., p. 187.)

Moera spinosa, Haswell. (Proc. Linn. Soc. N.S.W., iv., p. 268, pl. x., fig. 5; and Cat. Aust. Crust., p. 257.)

“Posterior margin of the five anterior segments of the pleon armed with a few acute teeth or spines; fourth and fifth segments armed behind with acute spines. Coxæ much shallower than their respective segments. Lateral plate of the third segment of the pleon serrated posteriorly. Eyes long, oval. Superior antennæ more than half the length of the body; first segment of peduncle as long as the cephalon and first segment of the pereion; second rather longer; third very short; flagellum as long as the peduncle; appendage nearly half as long as the flagellum.^*

“Inferior antennæ more than half as long as the superior pair; third segment of peduncle equal in length to the first segment of the pereion; fourth twice as long as the third, fifth as long as the cephalon; flagellum as long as the fifth segment of the peduncle. Anterior gnathopoda hairy, carpus rather longer than the propodos; the latter ovate; palm oblique, notched. Posterior gnathopoda with the propodos large, ovate, more dilated in the male than in the female, palm defined by a strong acute tooth, and armed in the male with two other prominent teeth. Two anterior pairs of pereiopoda subequal. Third pair rather shorter than the fourth and fifth; basos of the three posterior pairs produced at its postero-distal angle; meros, carpus, and propodos serrated and hairy. Fifth pair of pleopoda much shorter than the fourth. Sixth pair large, with a stout protopodite and two broad-lanceolate rami, the latter serrated and armed with setæ. Telson double, each half ending in a sharp spine, and armed with a bundle of stiff setæ. Length 8 lines.”

Hab. Auckland.

Of this species I have two specimens, a male and a female, for which I have to thank Professor Hutton. He found them in a collection of Mollusca sent him from Auckland. Mr. Haswell's specimens were from Tasmania. In my specimen of the male the second gnathopod of the right side only has the two promiment teeth on the palm, and these are rather larger and more blunt at the end than those shown in Mr. Haswell's figure; the second gnathopod of the left side is like those of the female, having the palm slightly convex, and without the two teeth. (See plate II., fig. 3a.)