CRUSTACEA NORTH PACIFIC EXPLORING EXPEDITION 3I 



Around and particularly in front of the cardiac region there is a 

 ■depression. At the summit of the small gastric region four obtuse 

 ridges meet in a slight transverse ridge, the two anterior, less con- 

 spicuous ones being those of the front ; the two posterior ones more 

 strongly marked, enclosing the median depression, and reaching to 

 the branchial eminences. Chelopoda rather long ; hand subprismatic, 

 robust, with the superior crest six-toothed, the outer keel granulated ; 

 under surface somewhat convex and regularly tuberculated wath 

 stout, flattened tubercles showing a tendency to arrangement in four 

 or five longitudinal rows, those of the outer row smallest. Lower 

 surface of meros also tuberculated. Ambulatory feet compressed, 

 ischium and meros with two spinous keels beneath. Abdomen and 

 sternum with an eroded or somewhat vermiculated surface, but 

 neither granulated nor spinulose. 



Color of the animal a dusky orange or light brownish ; fingers 

 pale brown. Dimensions of a male : Length of carapax, 0.38 ; 

 breadth, 0.55; between the elbows, 0.83; length of one of the chelo- 

 poda, 0.65 inch. 



Taken on a bottom of shelly sand, in 25 fathoms, in the China Sea, 

 about the middle, at latitude 23°. 



Genus CRYPTO PODL\ Alilne Edwards 

 37. CRYPTOPODIA FORNICATA (Fabricius) Milne Edwards 



Parthcnopc fornicata Fabricius. 



Cryptopodia fornicata Milne Edwards, Hist. Nat. des Crust., i, 362. De 

 HaXn, Fauna Japonica, Crust., p. 90, pi. xx, fig. 2. Dan.v, U. S. E.x- 

 ploring Expedition, Crust., i, 140. Gibbes, Proc. Elliott Soc, i, 32 

 (wood-cut). Vix Adams and White, Voy. Samarang, Crust., pi. vi, 

 fig- 4- 



The living animal is crcam-colorcd. with small |)ur]-)lish-br()wn 

 dots above. Heluw white, with a pale rose tint. KlhI punctce on 

 the inferior surface of the posterior projecting shield of the carapax. 



The specimen figured by Adams and White belongs most probably 

 to a distinct species, for the pustulation of the surface in Parthen- 

 ()j)oid crabs rather increases than diminishes with age. and the 

 short, thick che!()|)()da represente<l are quite different from those of 

 the young specimens taken by us. 



Cryptopodia fornicata occurred not unfre(|uentl\- in the harbor of 

 Hongkong, on shelly bottoms, at the depth of about 10 fathoms. 



