270 



Records of the Indian Museum. 



Vol. XIII, 



curved. Close to the apex each bears a large recurved tooth, 

 behind which a number of smaller teeth are usually found. On 

 the first pair of legs there are generally not more than one or 

 two such teeth; on the other legs they are more numerous (text- 

 fig. 20) and often extend from the base to the large subterminal 

 tooth ; the maximum number observed is eleven. There are fine 

 hairs on all the segments and a fringe on the posterior margins 

 of the propodus and dactylus. In large males the hairs on 

 the propodus and dactylus of the first legs are ver^^ long and 

 numerous, forming dense tufts that retain a great quantit}'^ of 

 mud. 



The sternum and abdomen are thickly beset with hairs. In 



the abdomen of the male (text-fig. 

 21 ) all the sutures are distinct. The 

 lateral margins are markedly sinu- 

 ous, the widest point being at the 

 junction of the fourth and fifth 

 segments; the ultimate segment is 

 trilobed terminally and is much 

 broader than the distal width of the 

 sixth. 



The carapace of the largest speci- 

 men, a male, is 57 mm. in length. 

 The species is described from 

 twenty-two specimens found on the 

 banks of the R. Hughli at Sibpur, 

 near Calcutta, in January 1917, by 

 Dr. Annandale and myself. They 

 were obtained in timber bored by 

 Teredo {Xylotria dunlopi) lying be- 

 tween tide-marks. The water at the time they were found was 

 almost or quite fresh at all states of the tide, but is doubtless 

 brackish later in the year. There are also in the collection two 

 specimens, both small, collected by Mr, T. Southwell near Khulna 

 in the Gangetic delta in August 1915. 



With this species I have associated the name of Dr. H. G. 

 Carter, Officiating Director of the Botanical Survey of India, to 

 whom I am indebted for facilities for collecting at Sibpur. The 

 types, which are from this locality, bear the number 9746/10 Zool. 

 Surv. Ind. 



Genus Elamena, Milne-Edwards. 



1837. Elamena, Milne- Edwards, Hist. nat. Crust., II, p. 33. [Not Elamene, 

 Milne- Edwards, Ann. Set. nat., Zool. (3), XX, p. 223 (1853) ; nor 

 Elamene, A. Milne- Edwards, Nouv. Arch. Mus. Paris, IX, p. ^21 

 (1873).] 



190U. hlamena, Alcock, Joiirn. Asiat. Soc. Bengal, LXIX, p. 385 (not the 

 synonymy). 



The carapace is oval, triangular or polygonal, greatly de- 

 pressed, and sometimes lamellar. The upper surface is flat or con- 

 cave, without the usual sharp-cut grooves, and the lateral margins 



Fig. 21. — Hymenicoides cartevi, 

 sp. nov. 



Abdomen of male. 



