CRUSTACEA XORTH PACIFIC EXTLORINX EXPEDITIOX I59 



258. IPHICULUS SPONGIOSUS Adams and White 



Plate XVIII, Fig. 8 



Il>hicuhis spongiosits Adams and White, Voy. Samarang, Crust., 57, pi. 

 XIII, fig. 5. 



It is covered with a villous coat of a dirty buff color, paler below, 

 with a transverse band of purple-brown at the epistoine. 



When captured it feigns death like a spider, contracting" or fold- 

 ing" up all its members closely against the body in a very compact 

 form, to which the shape of the sides of the body shows an adapta- 

 tion. 



It was dredged on muddy bottoms, sometimes on muddy gravel, in 

 froni ten to twenty fathoms, in the bays and channels of the Chinese 

 coast, near Hongkong. 



Genus OREOPHORUS Ruppell 



259. OREOPHORUS RUGOSUS Stimpson 



Plate XIX, Fig. 6, 6a 



Orcophorus rugosiis Stimpson. Proc. Acad. X'at. Sci. Phila.. x, p. i6i 

 159], 1858. 



Carapax subpentagonal, and much broader than long, in the pro- 

 portion of 1 : 1.38. It is rugose, as if eroded or vermiculated. with 

 a series of oblong pits parallel to the antero-lateral margins, and a 

 longitudinal series on each side of and almost circumscribing the 

 cardiac region. Front narrow, prominent. Branchial regions much 

 ])rojecting laterally, somewhat concave, and partly covered with 

 flattened or subcapitate tubercles, which extend to the posterior mar- 

 gin (if tlie carapax, where they become confluent. Chelipeds rugose, 

 eroded, and irregularly i)rotuberant ; fingers sulcated. of moderate 

 breadth, concave on the upper or inner side, and with sharp curved 

 ti]is placed laterally; immovable finger broader than the dactylus. 

 .Vmliiilatory feet moderately tuberculated along their edges, the 

 tiil)LTcl(.-s small. .\bdonu'n covered with small rounded tubercles, 

 not cni\\(k'd, and marknl with two inlerrupted impres.sed lines down 

 the middle, which circumscribe tin- nu-dian carina, w liioh is, luiwever. 

 less cnnvcx than the sides. 



This s])ecics i< of an ashy-white hue. but nuich discolored by 

 sordes. The dimensions of the female specimen above described 

 are: Length of e.irapax. 0.48: breadth. 0.662 inch. 



