84 



the apposed edge of tho daetylus being miuutelv, that of the propodite being sharply and conspicu- 

 ously, spinate. Except that the daetylus is nearly as long as the propodite. the last pair of legs is 

 very like that of Homola. 



The largest male has a carapace IS millini. in extreme length and 11 millim. in greatest 

 breadth. 



Off the Malabar coast, G8-14S fathoms. 



[ Two females of this species were di-edged off Trincomalee in 28 fathoms some years ago ; but 

 the characteristic expansion of the branchial chambers shows that the species belongs to the deep-sea 

 fauna.] 



Subfamily Pishi;i\ 

 Sl'HK-NOCAEClSVS. .\. Milne Edwai'ds. 

 Sphenocarcinus aurorie, n. sp. 



Closely resembles <S. cuneus (see p. 50), but differs in the following particulars : — 



The rostrum, measured from the anterior extremity of the post-ocular process, is in the male 

 about three-fourths, in the female from three-fifths to tliree-fourths, the lengtli of the rest of the 

 carapace : in both sexes it is equally distinctly bifid at the end. 



The pre-ooular processes end subacutely, and are therefore much more spine-like than in 

 S. cuneus. 



The tubercles of the carapace, though they have the same position and much the same shape, 

 are smaller, and are therefore separated by much wider channels : the gastric tubercle instead of touch- 

 ing the cardiac tubercle, is widely separated from it, and the cardiac tubercle is heart-shaped rather 

 than triangular. 



As regards the male sex only : the pair of carina on the dorsal surface of the carpopodites of the 

 chelipeds and legs are blunt, the carina on the dorsal surface of the meropodites is almost indistin- 

 guishable, and the arms of the chelipeds are very much stouter than the coiTesponding joints of tlic 

 gressorial legs. 



Colom-s of fresh spli'it specimens : light saffron-pink suffused with rose-pink, the rostrum almost 

 crimson. 



Twenty-seven specimens from off the Travancore coast, 224-284 fms. 



Length of carapace and rostrum 19 millim. c? and 9 . 

 ,. rostrum alone 8 .. ,. 



Greatest breadth of carapace 13u „ ,, 



Tn some females the rostrum is relatively shorter. 



CVCI.OMF.TOPA. 

 Family Xaiifhidn'. Siibfauiily Gale7iiiUf. 

 Oefyon. Kroyer. 



fif/'i/o", Kruycr, Nat. Hist. Tidskr. (1) 1.1837, p. 20: ?llicrs. Challenger Braeliyura p. 223: de Man, Notes 

 Leyden Mas. XII. 1890, p. 69 : A. Milne Edwards et Boiivier, Result. Camp. Sci Hirondelle, Brachyures et 

 Anomonres, p. 41 (Monaco, 1894). 



Chalcepus, Gerstaecker, Archiv. f. Naturges. XXII 1856. i p US. 



Carapace subquadrilateral with the fore-part rounded, very little broader than long, con\'ex (some- 

 times strongly so) fore and aft, slightly convex from side to side across the branchial regions, the 

 surface more or less pitted or finely eroded, the regions obscurely defined. 



Antero-lateral borders rather shorter than the postero-lateral, moderately arched, with from 3 to 5 

 teeth or acuminate lobes (including the outer orbital angles). 



