226 



which is the smallest, and the fourth or distal one by far the largest and the most acuminate, 

 distal half of cutting margin finely crenulate; inner margin of mobile finger likewise with four 

 teeth, the basal of which is the most conspicuous and the fourth, which is acuminate, situated 

 opposite the large, sharpened tooth of the lower finger, distal half of inner margin likewise 

 finelv crenulate. Smaller chela (fig. ^d) w^eak, upper and under border not keeled, the latter 

 frino-ed with hairs and much less sinuous than in the large chela; palm deeply pitted at outer 

 surface and shorter than fingers; the latter longitudinally grooved, teeth of fi.xed finger sharp, 

 rather equal in size, but with very minute serrulations scattered between the larger teeth, 

 movable finger more obtusely toothed. 



Walking legs slender, penultimate pair three times as long as the carapace, fourth pair 

 the smallest. Meropodite long, in the middle pairs 37. times as long as broad and inflated 

 near the base, shortly hairy, upper margin minutely serrate, near distal end usually provided 

 with a small, curved tooth, inferior margin with a series of 7 — 8 sharp teeth, the 

 a.vis of which is perpendicular to the long axis of the meropodite ; the proximal one of these 

 teeth is situated on the ischiopodite ; in the case of the last pair of legs these inferior teeth 

 are almost or completely absent. Carpo- and propodite . shortly hairy, the latter elongate in 

 the case of the penultimate pair of legs, but greatly shorter than the carpopodite in the last 

 legs. Dactyli compressed, fringed at the margins, about as long as propodites, straight, but 

 almost imperceptibly curved at tips, those of last legs curved upward and backward. 



Sternum strongly granulate, not hirsute. Abdomen of cf (fig- 3^) narrow; first segment 

 linear, about lialf the breadth of the sternum, third segment projecting laterally as far as the 

 first segment and with two longitudinal grooves, third, fourth and fifth segment partly coalesced, 

 as Miss Rathbun perceived, sixth segment slightly broader than long, with two shoulder-like 

 prominences anteriorly, terminal segment semi-circular, short. 



The species was first dredged near Hongkong by Stimpson, Henderson (see Alcock 1. c.) 

 records it from the Gulf of Martaban, Alcock again from Hongkong, L.\urie from the Gulf 

 of Manaar and Miss Rathbun from the Gulf of Siam. My adult specimen is of the same size 

 as denoted by the latter author. 



Dimensions in mm. : 



Fronto-orbital distance 



Anterior margin of front 



Breadth of carapace 



Length of carapace 



Length of large chela 



Length of small chela 



Length of penultimate pair of legs . . 



Typhlocarcinodes Alcock. 



1 88 1. Typhlocarcinus Miers (nee Stimpson). Ann. Mag. Nat. Hist. (5), v. 8, p. 260. 



1900. Typhlocarcinodes Alcock. Journ. As. Soc. Bengal, v. 69, prt 2, p. 326. 



1903. Caecopilummis Borradaile. Faun, and Geogr. Maldive and Laccadive Arch., v. i, p. 267. 



1911. Typhlocarcinops (part.) Rathbun. Transact. Linn. Soc. London (2), v. 14, p. 239. 



78 



