278 



Records of the Indian Museum. 



[Vol. XIII, 



borders being proportionately very much longer and quite straight 

 (text-fig. 28). The rostrum is hollowed above and bears near the 

 proximal end of its lower surface a low ridge in place of the tooth 

 found in E. [T.) xavieri. The epistome is extremely large, almost 

 as long as the external maxillipedes. The fingers of the chelae are 



Fig. 28. — Elamoia {Trigoiioplax) uiigiiiforinis. de Haan. 

 Outline of carapace. 



furnished with minute teeth and the dactylus of the walking legs is 

 triunguiculate. The abdomen of the male is broad at the base and 

 narrow at the apex, the lateral margms being concave ; the 3rd, 4th 

 and 5th segments are fused. 



McCuUoch ' appears to be right in 

 regarding his South Australian speci- 

 mens as a distinct variety of this spe- 

 cies. In Indian specimens the ros- 

 trum is not nearly so long, nor the 

 dactyli of the walking legs so broad as 

 shown in his illustration. I give here, 

 for comparison, outline figures of the 

 carapace and dactylus of the first leg. 



The species is not uncommon at Port 

 Blair in the Andamans, living among 

 weeds in pure sea water at depths of 

 2 to 8 fathoms. In life, specimens are 

 of a dull semitransparent brownish or 

 greenish tint, without any conspicuous 

 markings. 



The species is known from the Gulf 

 of Martaban (Henderson) and from 

 numerous localities in Japan (de Haan, 

 Ortmann, de Man, Parisi). 



Fig. 29. — Elameiia (T.) aiigni- 



furmts, de Haan. 



Dactylus of first walking leg. 



' Trigonoplax unguiformis var. loiigirostris, McCuUoch, Rec. Austmlian 

 Mils., VII, p. 59, pi. xii, fig. 3 (1908). 



