238 AUSTRALIAN MALACOSTRACA. 



about half as long as the outer, narrower, armed with long hairs. 

 Halves of the telson slender. Length 4i lines. 



Port Jackson. 



G-enus iEDiCERFS, Kroyer. 



Cephalon produced anteriorly into a rostrum more or less 

 acute than obtuse, but always transparent, turgid, yellowish red, 

 oval. Eyes none. ? Peduncles of the antenna? long, equalling 

 or surpassing in length the flagellum of the superior. Superior 

 antenna? not appendiculated. Both pairs of gnathopoda sub- 

 chelate, very large. First two pairs of pereiopoda strong, fifth 

 pair very long, slight, almost filiform (except the basos). Coxa? 

 moderately large, broad, and deep, armed upon the inferior 

 margins with simple hairs. Posterior margin of the fourth pair 

 not excavated. (K. fide S. B.) 



426. CEdicerus fossor. 



(Edicerus fossor, Stimpson, Proc. Acad. Nat. Sci. Philad., 1S55 ; 

 Spence Bate, Cat. Amphip., p. 373. 



Body rounded above. Pleon with the third and fourth 

 segments compressed and raised above into a sharp crest. Eyes 

 black, round, and small. Antenna? subequal, with stout flagella 

 forming half their length ; each flagellum consisting of about 

 eighteen ai-ticuli and having a serrated appearance from the 

 produced spine-like inferior angle of each articulus. Gnathopoda 

 subequal ; propoda rather broadly ovate, dactyla about one-half 

 as long as propoda. First and second pairs of pereiopoda having 

 the propoda subovate or paddle-shaped, with the rounded 

 extremity covered with hairs ; dactyla about one-half as long as 

 propoda. First and second pairs of pereiopoda having the 

 propoda subovate or paddle-shaped, with the rounded extremity 

 covered with hairs; dactyla obsolete ; third and fourth pairs 

 very short, with compressed, clavate, or cutlass-shaped dactyla. 

 Coxa? of the third pair of pereiopoda very large, square. Three 

 posterior pairs of pleopoda biramous, very hairy on their inner 

 edges. Colour white, with a few blackish spots. [S.~\ 



Botany Bay (Stimpson). 



