115 



Mandibular palp typical of Paratelphusa, the terminal segment being 

 bifurcate so that its two lobes embrace the incisor process of the mandible. 



In the external maxillipeds the merus is as long as the short ischium, and 

 is pointed, hairy, and non-flagellate ; the ischium is grooved, and the merus is 

 square-cut and slightly broader than long. In the 1st and 2nd maxillipeds the 

 flagellum of the exopodite is vestigial. 



Chelipeds unequal in both sexes, but much the more so in the adult male ; 

 surface of merus rugulose, of carpus and hand smooth ; inner angle of carpus 

 spiniform ; fingers slender, longer than the palm in both chete, and pointed ; 

 in the smaller chelae they are evenly toothed ; in the larger chelee of old males, 

 but not of females and younger males, one or two teeth in each finger are much 

 enlarged and the fingers meet only at tip. 



Legs about as long as the smaller cheliped, somewhat slender; dactyli 

 much longer than their propodites ; propodites twice, or more, as long as broad. 



In old males the dactylus of the larger chelae is nearly half again as long 

 as the palm. 



In a fine old male the carapace is *lnds inch long, Mnds inch broad, and 

 Mnds inch deep. 



Young individuals of this species are very instructive ; their carapace is 

 neither so broad nor so convex, but has quite the shape of that of levis ; the 

 post-orbital crests are sharper and more distinct, and the lateral epibranchial 

 denticle is fairly conspicuous. 



Ex 5J15. Ganjam in N. Cachar. E. C. S. Baker. | ^ ^.' ^ ? (includ- 



10 t ing types). 



3360 



7 ■ 



5544 



10 ■ 



Cachar. J. Wood-Mason. 1 ? . 



Ganjam in N. Cachar. Purchased. 1 ^ , \ $ . 



41. Paratelphusa (Globitelphusa) bakeri, var. cylindrus, Alcock. 



In this variety the carapace is barrel-like, its branchial regions being 

 greatly inflated, and its maximum depth being about seven-ninths its length. 

 Owing to this inflation the branchial regions are separately distinguishable, and 

 in one specimen they culminate in an obliquely-longitudinal ridge on either 

 side of the carapace. 



The epigastric crests are distinguishable as little, round, low elevations ; 

 but the post-orbital crests are less distinct than in the type. 



In the larger cheliped of the male ihe enlarged teeth of the fingers are 

 much coarser, especially a large double one in the fixed finger. 



In an adult male the carapace is fths inch long, iths inch broad, and 

 rVths inch deep. 



In its more distinct epigastric crests this variety resembles the following 



