igi?-] S. Kemp : Notes on Cmstacca Decapoda. 279 



Elamena gracilis, Borradaile. 



iyo6. Elamena gracilis, Borradaile, in Gardiner's Faun. Geog. Mahlive and 



Laccadive Arcliipel., II, p. 684, text-fig. 122 a. b. 

 191 1. Elamena gracilis, Rathbun, Trans. Linn.Soc, Zool. (2), XI \\ p. 242. 



I have seen no specimens of this species and do not know 

 whether it should be referred to Elamena^ s.s., or to Trigonoplax 

 Judging from the figure the lateral margins of the carapace are up- 

 turned ; but the chelae are described as slender and apparently do 

 not show any sexual differences. There is no mention of a vertical 

 keel on the lower face of the rostrum. 



In the form of the carapace E. gracilis differs conspicuously 

 from any Indian species of the genus that I have seen. It was 

 described by Borradaile from Minikoi and Male Atoll and has 

 since been recorded by Miss Rathbun from Coetivy. 



