ATT&TfeiLIjLCT MAIACOSTBACA. 257 



a few bristles. Telson small, the segments conical. Colour 

 light olive with minute black dots. Length \ in. 

 Port Jackson, among sea- weed. 



450. Mcera approximans. 



Moera approximans, Haswell, 1. c, p. 334, pi. xxi., fig. 8. 



Pesembles M. dentifera, but has the posterior guathopoda sub- 

 quadrate with the palm oblique, convex, defined by a small 

 conical tooth. 



Clark and Shark Islands, Port Jackson. 



451. Moera spinosa A.M. 

 Mcera spinosa, Haswell, 1. c, p. 268, pi. x., fig. 5. 



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. Coxa much shallower 

 than their respective segmetns. Lateral plate of the third seg- 

 ment of the pleon serrated posteriorly. Eyes long oval. Superior 

 antennae more than half the length of the body ; first segment of 

 the peduncle as long as the cephalon and the first segment of 

 the pereion ; second rather longer ; third very short ; flagellum 

 as long as the peduncle ; appendage nearly as long as the 

 flagellum. Inferior antennas more than half as long as the 

 superior pair ; third segment of the 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 sub-equal. 

 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 setae. Telson double, each half ending in a sharp 

 spine, and armed with a bundle of stiff setse. Length 8 lines. 



Tasmania. 



