252 AUSTRALIAN MALACOSTEACA. 



eubequal. Posterior pair of pleopoda having the rami very 

 unequal, the outer one extending much beyond the preceding, 

 the inner being rudimentary. Telson double. [S. JB.] 



444. Melita Australis. A.M. 



Melita Australis, Haswell, 1. c, p. 261, pi. ix., figs. 6 and 7. 



Pour anterior segments o the pleon with their posterior dorsal 

 border concave, and armed with two to six acute teeth. Eyes 

 small, round. Superior antennae three-fourths of the length of 

 the body ; first joint of the peduncle stout, shorter than the 

 second ; flagellum longer than the peduncle. Inferior antennae 

 two-thirds of the length of the superior pair ; flagellum shorter 

 than peduncle. Anterior gnathopoda with the carpus and 

 propodos of equal length ; the former sub- triangular ; the latter 

 quadrate, the palm defined by a small spine ; the dactylos curved. 

 Posterior gnathopoda unequal in the male ; the right resembling 

 the anterior pair in form, but longer, the palm not defined, the 

 left with the meros produced posteriorly into an acute spine, 

 the propodos six times as long as that of the anterior pair, sub- 

 triangular, with the apex rounded, the base (palm) oblique, 

 slightly concave, and armed with three teeth, the anteroinferior 

 angle produced into a stout palmar process grooved internally for 

 the lodgment of the dactylos when the hand is closed ; dactylos 

 geniculate at base, slightly curved at apex. Three posterior 

 pairs of pereiopoda large, serrate, hirsute, the third pair shorter 

 than the others. Pourth pair of pleopoda longer than the rest ; 

 last pair with the inner ramus rudimentary, the outer long, 

 foliaceous, serrate. Telson two-branched, hirsute. Length 4 

 lines. 



Port Denison ; Port Stephens ; Port Jackson ; Western Port. 



Genus Mosra, Leach. 



Long and slender. Superior antennae appendiculatc, much 

 longer than the inferior. Inferior antenna? a little posterior to 

 the superior, having the peduncle much longer than the flagellum, 

 and not reaching to the extremity of the peduncle of the superior. 

 Oral appendages receding. Mandibles having an appendage. 

 Pour anterior pairs of coxa) not so deep as their respective 

 segments ; three posterior not much shorter than the preceding. 



