1918.] Stanley Kemp: Decapodn of the Inle Lake. 



89 



are dull olivaceous speckled with black. The ventral surface is yellow- 

 ish and the mouth-parts are stained Avith dull olive. Individuals from 

 the Inle Lake are usually more bri^htly coloured than those fi'om streams 

 in the same district." 



This is apparently the only crab that makes its way into the central 

 region of the Inle Lake, on the bottom of which it is occasionally found. 

 It is more abundant among the roots of the floating islands at the edge 

 of the lake, and also frequents small hill-streams. 



The specimens in the collection are from Yawnghwe State : from the 

 Inle Lake, 3000 ft., aiid from He-Ho stream, 3800 ft. The types, 

 which are from the former locality, bear the number 9771/10, Zool. Surv. 

 Ind. 



Potamon (Potamon) curtobates, sp. nov. 



Plate xxiv, figs. 5, 6. 



This species is allied to P. abbotti, Rathbun, P. mornat.mii, Rathbun, 

 and P. pealianum (Wood-Mason), but differs from all in the extreme 

 depth and convexity of the carapace. 



The length of the carapace is a trifle less than three quarters its 

 greatest breadth ; it is thus comparatively short and broad. The depth 

 is always conspicuously more than half the greatest breadth (pi. xxiv, 

 figs. 5, 6). 



The cervical groove is well defined posteriorly and the point where 

 it cuts the post-orbital crests is usually clear ; in the intermediate part 

 of its course it is exceedingly obscure. The mesogastric areola is remark- 

 ably broad, its greatest breadth being almost or quite ecjual to one-third 



Fig. 3. — Fulumun (pulanion) curtobatei^, sp. nov. 



a. Outline of left side of carapace. 



b. Third niaxillipede. 



c. Abdoineu of male. 



the breadth of the carapace. (In P. 'pedluiniini. it is only one cjuarter 

 the breadth.) The antero-lateral boundaries of the areola are usually 

 obsolete in specimens of medium size, but are visible in a very old male. 

 The two small lobules behind the posterior limit of the cervical groove 

 are not as a rule completely defined. The n|)]jer surface of the cai'apace 

 is very strongly convex fore and aft and slightly so from side to side ; 



