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fact, that the last joint of the peduncle is about twice as long as the preceding 

 joint and nearly as long as the flagellum, which consists of only 5 joints 

 (fio-. 2(5); the two last joints of the peduncle are fringed with very long feathered hairs, and 

 the flagellum terminates in a very long hair. Epistome not prominent in the middle, linear. 

 Buccal cavity widening backward. External maxillipeds (fig. 2 c) much as in the two preceding 

 species, leavino- a verj' narrow space between them; ischium longer than merus, the latter 

 circular, suture between ischium and merus concave; palp short and weak; exognath slender, 

 about one-fourth of the width of the ischium. 



Chelipeds equal, small. Arm short, hairy, scarcely toothed near the distal end of the 

 anterior margin; wrist granulate at upper surface, inner angle rounded; chela likewise, but 

 more strongly, granulate at outer surface, granules in longitudinal rows, the ventral one of 

 which extends to the fixed finger and is continued here in the shape of a sharp keel. Walking 

 leo-s slender, middle pairs more than twice as long as the carapace, fringed with hairs, but 

 not so closely as in the two preceding species ; last pair scarcely shorter than preceding legs. 

 Meropodite unarmed ; propodites not broadened, with the longest hairs along hind margin ; dactyli 

 of all the legs .subequal in length, with fine, horny tip. 



First abdominal segment of cT (fig. 2d) as broad as last sternal segment, longest in the 

 median line; second segment only one-third as broad as preceding, but considerably longer; 

 third segment produced laterally, but by far not reaching outward as far as first; next segments 

 offerino- nothingr rerharkable. 



The species is of the same uniform ivory-white colour as nearly all the members of the 

 subfamily. 



I have no doubt that my specimen is identical with " Typhlocarcinops" piroculata. Miss 

 R.\THBUN regarded this species as a member of the genus created by herself in the preceding 

 year, on account of the first abdominal segment reaching to the bases of the posterior pair of 

 legs. I have shown in the two preceding species, that this character also occurs in Typhlocar- 

 cinodes. Further, in Typhlocarcinops the epistome is distinct and, in front view of the animal, 

 proves to be prominent and straight at the hind edge; the antennae are rather long, the peduncle 

 much shorter than the flagellum^) and not provided with long hairs; the shape of the merus 

 of the external maxillipeds is more angular and the suture between merus and ischium is straight. 

 It must be admitted, that the present species e.xceedingly resembles Typhlocarcinops. 



The species has first been recorded from the Western Indian Ocean (Amirante Islands, 

 depth 34 fathoms). The "Siboga" obtained this species south of the Philippines. 



Dimensions in mm.: 



Fronto-orbital distance 2.85 



Anterior margin of front 1.42 



Breadth of carapace 4.95 



Length of carapace 3.65 



Length of penultimate pair of legs . 8.2 

 Length of last pair of legs .... 8.1 



1) Miss Rathdun herself remarked that ia '^Typhlocarcinops" piroculata the flagellum of the antenna doe? not exceed the 

 peduncle in length. , 



84 



