Zoological Society. 205 



Body covered, when alive, with a white mealy substance. Lantern 

 not luminous by day or night. Remains in a torpid state during the 

 heat of the day, and becomes more active in the evening. 



Forest of Borneo near Tampasook. 



4. Short Descriptions of some new species of Crustacea in 

 the Collection of the British Museum. By Adam White, 

 F.L.S. 



Family Parthenopid^;. 



Cryptopodia dorsalis, White and Adams, n.s. 



Carapace narrower and wider than the same part in the Cryptopodia 

 fornicata, the greater part of the back covered with slight pustules ; on 

 the posterior part of the carapace are two deep grooves placed longi- 

 tudinally and slightly bent, so as to have a lyre-shaped form; posterior 

 edge of the carapace with coarser and rounder crenations than in 

 C. fornicata ; the ridges on the chelae with blunter tubercles. 



This distinct and beautiful species of a singular genus was found 

 by Mr. Adams in the Sooloo Sea, where the bottom was stony. 



When alive, it is of a dirty flesh-colour, with brown markings and 

 minute black specks ; on each chela there is an orange linear spot : 

 under surface of a dead white, on the breast reddish. 



Mr. Adams informs me that the species of this genus resemble 

 those of Calappa in their habit of simulating death when disturbed, 

 folding the chelae close to the front of the carapace and concealing 

 their legs under the dilated sides of the carapace. They are always 

 found in deep water, while the Calappida are found on sandy flats, 

 sometimes buried under the sand. 



Family Ocypodid^e. 

 Gelasimus crassipes, White, Cat. Crust, in Brit. Mus. p. 36. 



Carapace very much arched, suddenly narrowed behind ; four hind 

 pair of legs thicker and stronger than in other species ; front with a 

 lobe, without narrow stalk. 



Hab. Philippine Islands (Siquejor). From Mr. Cuming's collec- 

 tion. 



Gelasimus bellator, White, 1. c. 



Carapace with the fore-part just behind the insertion of eye-pedun- 

 cles sinuated, the front slightly dilated into a rounded lobe. Larger 

 hand with the fingers very long, the moveable with the sides nearly 

 parallel, two or three larger tubercles on the edge near the base ; fixed 

 finger margined on the under side ; the cutting edge with a very 

 wide shallow tubercular sinus at base ; at the end of sinus beyond the 

 middle a strong wide tooth, which gradually slopes down to the end, 

 which curves up. 



Hab. Philippine Islands. From Mr. Cuming's collection. 



Gelasimus cultrimanus, White, 1. c. p. 35. 

 Front between the eyes with a small dilated rounded lobe. Edge 



