274 ON AUSTRALIAN AMPHIPODA. 



Sub-fam. COKOPHIIDES. 



Genus Cyptopiiiitm, Dana. 



Cyrtophium parasiticus, sp. nov. (PI. XIL, fig. 1.) 



Superior antennae exceeding the body in length, hairy ; the 

 flagellum shorter than the last segment of the peduncle. Inferior 

 antennae nearly'once and a half the length of the body, armed 

 with long hairs ; third and fourth segments of the peduncle 

 subequal ; fifth shorter. Anterior gnathopoda hairy ; propodos 

 shorter than the carpus, ovate. Posterior gnathopoda very large ; 

 propodos as long as the cephalon and the three first segments of 

 the pereion ; palmar border with a shallow excavation near the 

 middle of its length, armed distally with fine denticles. Pereiopoda 

 subequal. Protopodite of the fourth pleopoda stout ; inner ramus 

 longer and stouter than the outer, both armed with a few setae. 

 Fifth pleopoda (wanting). Sixth pleopoda short, foliaceous, ovate. 

 Telson simple, squamiform, blunt. 



Length, inclusive of antennae, four-and-a-half lines. 



Pound clinging in considerable numbers on the surface of a 

 species of Cucumaria, (C. pentagona, Quoy et Gaim.) dredged in 

 a depth of three or four fathoms in Port Jackson. 



Genus Icilius, Dana. 

 Icilius australis, sp. nov. (PI. XIL, fig. 2.) 



Pereion ovate, first two segments very short. Eyes red, very 

 prominent. Superior antennae much smaller than the inferior 

 pair, nearly as long as the body with a uni-articulate appendage ; 

 third joint of the peduncle shorter than the others ; nagellum 

 longer than the peduncle. Peduncle of inferior antennae very 

 stout, as long as the superior pair. Maxillipedes unguiculate, 

 hairy, provided with squamiform plates. Gnathopoda subequal, 

 slender, unguiculate, provided with long hairs ; the carpus rather 

 longer than the propodos. Last pair of pereiopoda longer than 



