58 Proceedings of the Royal Society of Victoria. 



On removal of the hairs from the carapace the surface is 

 polished, with a few small pits, but without granules. 



The inner part of the pterygostomian region is membranous in 

 consistency. 



The exterJial 7naxillipeds are operculiforra and covered with a 

 dense pubescence. The ischium is crossed by an oblique eleva- 

 tion which is continued on the hepatic region of the carapace by 

 a prominent crescent-shaped ridge which does not quite reach the 

 posterior lateral margin. The palp is articulated at the antero- 

 lateral angle of the ischium. 



The palate is well delimited from the epistome. The efferent 

 branchial canals are defined by a distinct ridge. 



The epistome is triangular and terminates anteriorly in a short 

 ridge which is continuous to the angle formed by the junction of 

 the two lobes of the front. 



The orbits are well defined posteriorly and terminated anter- 

 ioi'ly by the antennulary fossae. The infraorbital margin ends in 

 a prominent ridge which is turned slightly downward — beyond 

 this no teeth are present. 



The first antennae are short, entirely retractile into pits 

 beneath the lobes of the front, and not visible when viewed from 

 above. 



The second aiitennae have a short peduncle which does not 

 extend beyond the orbital margin, and carries a long and fine 

 flagella. 



The eyes are small and entirely retractile within the orbits. 



Legs. The chelipeds are shorter than the first and second 

 pairs of ambulatory legs, and are entirely covered with a dense 

 tomentum, with the exception of the tips of the fingers which are 

 naked. The meros is triangular in section and fringed along its 

 upper edges. The upper surface is flattened with its edges 

 prominent. The hand, which is not robust, is obscurely longitu- 

 dinally cristate on its outer surface. The fingers are strongly 

 toothed and have between them an open space at their base when 

 closed. 



The first and second ambulatory legs have the meros markedly 

 triangular in section — the third and fourth less so — while the 

 carpos and propodos are in all cases quadrangular. All of these 

 joints are slightly dilated and truncated at their distal extremities. 



