BY WILLIAM A. IIASWELL, M.A., B.SC. 249 



Male. — Coxae deep. Eyes large, round. Inferior antennae 

 exceeding- in length the cephalon and two first segments of the 

 pereion ; peduncle and flagellum subequal, the fifth joint of the 

 former longer than the fourth. Superior antennas equalling in 

 length the third and fourth segments of the peduncle of the inferior 

 pair. Mandibles very powerful, resembling in general form those 

 of TalitruB sj/lraticm, the cutting edge with several strong curved 

 teeth, between which and the grinding tubercle are seven slender 

 ciliated spines ; the molar tubercle broad, crossed by numerous 

 very fine, acute transverse ridges. Maxillipedes non-unguiculate, 

 the edges of the two terminal segments and of the lateral plates 

 armed with numerous seta?. Anterior gnathopoda subchelate, 

 carpus and propodos subequal, armed with setae ; propodos sub- 

 triangular, palm transverse, hairy, defined by a rounded elevation, 

 superior border with five setiferous serrations. Posterior 

 gnathopoda with the propodos large, varying in size ; usually 

 about four times as long as that of the anterior pair, sub-quadrate, 

 the palm transverse, excavated, armed with a few minute teeth. 

 First pair of pereiopoda rather longer than the second ; third pair 

 much shorter than fourth and fifth ; fifth the longest, its basos 

 much broader than that of the others ; three posterior pairs armed 

 with setae, set on lateral serrations. Posterior pleopoda with the 

 ramus slender. Telson triangular, blunt, cleft. 



Female. — Anterior gnathopoda subpediform, the propodos 

 narrowing distally, its superior border serrated, setiferous, its 

 lower border setiferous, entire. Posterior gnathopoda with the 

 carpus and propodos narrow, the dactylos rudimentary, not 

 reaching to the extremity of the propodos. Colour white, with 

 irregular light-red spots. 



Length six lines. 



Hob. Sandy beaches, coast of New South Wales (Manly, Bondi, 

 Kiama) ; found under masses of decaying sea-weed above the 

 reach of ordinary tides. 



