AUSTRALIAN HALACOSTltACA. 37 



Genus Cryptopodia, Milne-Edwards. 



Carapace transversely triangular, with the lateral margins 

 greatly produced and concealing the ambulatory legs, the posterior 

 margin also prolonged backwards. Front very prominent. No 

 ridges on the pterygostomian regions. [iLT.] 



58. Cryptopodia fornicata. A.M. 



Cancer fornicatus, Eabr., Ent. Syst., t. ii., p. 453 ; Herbst, 

 pi. 13, figs. 79-SO. 



CEthra fornicata, Lamk., Hist, des An. s. vert,, t. vi., p. 2G5 ; 

 Dcsmarest, Consid. p. 110. 



Cryptopodia fornicata, Milne-Edwards, Hist. Nat. Crust., t. i., 

 p. 362; Adams and White, Zool. of H.M.S. "Samarang," 

 Crustacea, p. 32, pi. vi., fig. 4 ; Haswell, /. c, p. 154. 



Carapace smooth above, denticulated on the borders ; rostrum 

 entire, as long as broad ; anterior legs about once and a half as 

 long as the carapace, their third joint much dilated posteriorly, 

 and armed with spines on the anterior border ; hands armed 

 above with a strong row of spines. Legs of the four last pairs 

 ornamented above and below with a denticulated crest extending 

 nearly the whole length of their third joint. 



Brook Island ; Cape Grenville ; Port Denison. Found also 

 in the Indian Ocean, the coast of China, etc. 



59. Cryptopodia spatulifrons. A.M. 



Cryptopodia spatulifrons,MieTs, Ann. and Mag. Nat. Hist. (5), 

 iv., 19, p. 2(3, pi. v., fig. 10 (1879) ; Haswell, 1. c, p. 451. 



Carapace transversely triangulate, with the postero-lateral 

 angles truncated, everywhere punctate and granulated, the 

 granulations being largest and most conspicuous on the elevated 

 cardiac and branchial regions and on the postero-lateral and 

 posterior expansions of the carapace. The branchial and cardiac 

 regions are much elevated ; there is a strongly marked depression 

 in the centre of the carapace ; and the surface of the carapace 

 behind the antero-lateral margins and the posterior margin are 

 concave ; the antero-lateral margins are denticulated and the 

 postero-lateral and posterior margins crenulated. The rostrum 

 is prominent, not deflexed, smooth and of a semi-elliptical shape, 

 sub-acute at the extremity and with a series of sub- marginal 



