328 OX SOME NEW GENERA AND SPECIES OP AMPHIPOEA, 



longer than broad distally, each armed with fasciculi of setae both 

 above and below, every second articulus slightly expanded at its 

 infero-distal angle and tipped with auditory cilia. Inferior 

 antenna) rather shorter than the superior pair ; third joint of 

 peduncle short, very stout, fourth and fifth subequal, the latter 

 rather narrower than the former ; flagellum as long as the last 

 two segments of the peduncle ; articuli very much broader than 

 long at the proximal end, becoming longer than broad towards 

 the extremity. Maxillipedes with a well-developed squamiform 

 plate on the ischium and a smaller one on the basos. Gnathopoda 

 ejual, similar, the propodos ovoid, narrower distally than 

 proximally, the palm not defined. Pereiopoda short and stout, 

 bordered with fine setae, the two last pair rather longer than the 

 third. Last three pairs of pleopoda with slender, acute, st}diform 

 rami, armed with a few fine seta) and slightly curved at the apex. 

 Telson triangular, blunt, cleft in rather more than half its length. 

 Colour light olive with a few red spots on the antenna) ; eyes 

 blue-black. Length ^ in. 



Hab. Clark Island, Port Jackson, found about low- water mark 

 enclosed in masses of alga) and polyzoa. 



Atylus lippus, sj). nov. (PL XX., fig. 1.) 



Eyes roundish, the pigment scattered. Superior antenna) as 

 long as the cephalon and first five segments of the pereion ; 

 segments of the peduncle short and stout, the first the largest, 

 the third very small, scarcely distinguishable from the articuli of 

 the flagellum ; flagellum twice as long as the peduncle ; the 

 articuli longer than broad, each armed both above and below 

 at the distal end with a few setae, every fourth dilated inferiorly 

 and distally, and crowned with stout cilia. Inferior antennae 

 longer than the superior pair ; flagellum more than twice as long 

 as the peduncle ; the segments short, broader than long, ornamented 

 at the distal end with a fasciculus of curved setae both above and 

 below. Gnathopoda subequal, bordered with a fringe of short 



