CARCINOLOGICAL STUDIES. 237 



thorax is perfectly smooth and has uowhere a trace 

 of granulation; it is however minutely punctate, the puuc- 

 tulation of the intestinal region being often more crowded 

 than that of the rest of the upper surface. The pterygo- 

 stomian regions are a little rugose. 



Dr. Hilgendorf believed that the posterior margin of the 

 cephalothorax was somewhat less broad in our specimens 

 than in Telphusa picta. He wrote me on this character 

 the following: »Als Unterschied Ihres Exemplares gegen- 

 liber picta ist, ausser der Farbe (ich habe aber andere 

 Exemplare von Luzon , die auch ungefleckt sind), die Schmal- 

 heit des Hinterrandes vom Cephalothorax bemerkenswerth ; 

 dieser (oder die gleichgrosse Breite des auliegenden Ab- 

 dominalsegmentes) ist bei Ihrera Exemplare 2^/3 — 2^2 Mai 

 in der Breite des Cephalothorax enthalten , bei picta (gros- 

 ses 9) kaura zweimal , bei dem Mannchen allerdings 2^/5 

 Mai. Wahrscheinlich andert sich dies mit dem Alter, wie 

 es bei der Verlangerung der Scheerenfinger sicher zu sein 

 scheint. Danach würden die bei Ihrem Exemplare sehr 

 langen Finger (fig. 2'^) (Index fast genau = ünterrand der 

 Hand, bei unserem , nur 22 mm, breiten , Mannchen 8: 

 12 mm.) noch keinen specifischen Unterschied bedingen." 



The impressed line on the ischium-joint of the outer 

 foot-jaws (fig. 2^^) runs not far from the internal margin 

 of the joint, and not in the middle of it; this joint is 

 coarsely punctate, but the merus-joint is almost smooth. 

 The abdomen of the male (fig. 2^) resembles in general 

 form that of Paratelphusa spinigera Wood-Mas. ; the pen- 

 ultimate joint is nearly as long as broad and its lateral 

 margins are slightly concave, immediately behind the 

 middle; the terminal joint is scarcely longer than broad 

 at its base and rounded at the tip. The outer surface of 

 sternum and abdomen is distinctly punctate. 



The chelipedes of the male are very unequal. The 

 arms do not project as much beyond the lateral margins 

 of the cephalothorax as in Telphusa Goudoti; their upper 

 and their anterior margins are granular and a few trans- 

 Notes from the Leyclen Mtiseura, Vol. X.IV. 



