346 ON SOME NEW GENERA AND SPECIES OF AMPHIPODA, 



oval ; the palm nearly transverse, not defined. Posterior 

 gnathopoda longer and more slender than the anterior pair ; carpus 

 and propodos nearly equal in length, the latter narrower than the 

 former, with the palm transverse, the dactylos short. Pereiopoda 

 subequal, slender, all prehensile; basos narrow; propodos oblong, 

 palm transverse, waved ; dactylos short. Three posterior pleopoda 

 biramous, the rami unarmed, last pair with the rami broad- 

 lanceolate, with one or two hairs on the borders. Segments of 

 the telson broad-lanceolate, acute. Length 3/20ths inch. 

 Hal. Port Jackson, two fathoms. 



Polycheria brevicornis, sp. nov. 



Eyes rather small, round. Superior antennae as long as the 

 cephalon and first three segments of the pereion ; first segment 

 of the peduncle short and stout, second narrower than the first 

 and about twice as long ; third about one-fourth of the 

 length of the second ; flagellum equal in length to the second 

 segment of the peduncle, of eight articuli. Inferior antennae 

 equal to the superior in length ; flagellum as long as the last 

 segment of the peduncle, of six articuli. Anterior gnathopoda 

 with the carpus and propodos subequal, the latter ovate, with a 

 few serrations on the borders ; palm transverse, dactylos short. 

 Posterior gnathopoda with the carpus rather longer than the 

 propodos — the latter oblong, nearly three times as long as broad, 

 with a few serrations on the borders ; palm transverse, dactylos 

 short. Length 3/20ths inch. 



Hob. Port Jackson. 



GROUP ABNORMALIA. 

 Fam. CAPKELLIME. 



Genus Cappella, Tjamarck. 

 Caprella echinata, sp. nov. (PL XXIIL, fig. 2.) 

 Male. — Cephalon rather longer than the other segments, armed 

 on its dorsal surface a little behind the eye with a very prominent 



