300 A. Alcock — Oar etiological Fauna of India. [No. 3, 



1. Eucrate crenata, De Haan. 



Cancer (Eucrate) crenatus, De Ilann, Faun. Japon. Crnsfc. p. 51, pi. xv. fig. 1. 

 Eucrate crenata, Ortmann, Zool. Jahrb , Syst., VII. 1893-94, p. 688. 

 ? Pilumnoplax sulcatifrons, Stimpson, Proc. Ac. Nat. Sci. Philad. 1858 (1859), 

 p. 93 : Tozzetti, ' Magenta' Crust, p. 102, pi. vii. fig. 2. 



Carapace smooth, its length about five-sixths of its breadth. 

 Front not quite a third the breadth of the carapace, notched and 

 grovecT in the middle line. Major diameter of orbit about half the 

 width of the front. . 



Anterolateral borders of carapace cut into 4 bluntish teeth, the 

 middle two of which are the largest : a short ridge runs on to the dorsum 

 of the carapace from the last tooth. 



Chelipeds less than twice the length of the carapace, not much 

 longer than the legs, especially in the female : one or two teeth at the 

 far end of the upper border of the arm, and one at the inner angle of 

 the wrist : hand rather short and squat, the fingers, which are stout, 

 are a little longer than the palm : there is a characteristic patch of fur 

 at the far end of the upper surface of the wrist. 



Legs smooth, the last 3 joints more or less ciliated : in the 4th 

 (last) pair the propodite and dactylus are broader and more compressed 

 than in the other legs. 



In the Indian Museum are 3 specimens from the Andamans and 

 1 from Madras (besides 3 from Hongkong). 



The carapace of the largest specimen is 10 millim. long and 12 

 millim. broad. 



2. Eucrate crenata var. affinis, Haswell. 



Eucrate affinis, Haswell, P. L. S., N. S. Wales, VI. 1881-82, p. 547 and Cat. 

 Austral. Crust, p. 86: de Man, Journ. Linn. Soc, Zool. XXII. 1887-88, p. 89, pi. v. 



fig. 5. 



? Psewdorhombila sulcatifrons, var. australiensis, Miers, Zool. H. M. S. Alert, 



p. 242, pi. xxiv. fig. c. 



Differs from typical E» crenata, specimens of the same sex and of 

 approximately the same size compared, only in the following characters : — 



(1) the carapace is more sculptured, for besides the short trans- 

 verse ridge on the dorsum of the carapace that runs from the last tooth 

 of either anterolateral border, there are similar ridges runniug (a) from 

 the 2nd tooth of either anterolateral border, parallel with the orbit, 

 and {b) parallel with the front, near the anterior limit of the gastric 

 region ; there is also a beaded ridge running parallel with either 

 postero-lateral border : 



