TO INDIAN CARCINOI,OGY. 3'J5 



165. Elamene truncata, A. Milnc-Echv. 



E. truncala, A. ]Mihie-Edwarcls, Kouv. Arch. Mus. Hist. Nat. t. ix. p. 323 (1873). 



Silavaturai Par; five females Avitli ova, one male {Thurston). 



The above specimens seem to be referable to this species, with the short description of 

 which they entirely agree. The front is rounded and entire, with an inferior vertical 

 prolongation which partially separates the antennules. The carapace is bounded by a 

 slightly raised marginal line. The meral and carpal joints of tlie ambulatory legs each 

 terminate in an anterior distal spine. The last abdominal segment in the lemale has its 

 free margin broadly emargiuate. 



Dtstrihutio)}. New Caledonia [A. IIllue-Edwards). 



Group OXYSTOMATA. 



Genus Calappa, Fabr. 



166. Calappa hepatica (Linn.). 



C. hepatica (Liiiu.), ]Miers, 'Challenger' Brachyura, p. 285 (188G), ubi syaoii. 



(= C. iiitjcrculata, Fabr.). 



Rameswaram and Tuticorin {Thurston); Ceylon {Haly, Nevill); Gulf of Martaban 

 {Oates). 



In young individuals the postcro-lateral lobes of the carapace are not nearly so strongly 

 developed as in adults, but the margins are more strongly dentate. 



Distribution. Throughout the Indo-Pacitic Pbegion, from the Red Sea, E. Africa, and 

 Natal to China, the Sandwich Is., and New Zealand. 



167. Calappa gallus (Herbst). 



C.gattus (Herbst), Milne-Edwards, Hist. Nat. Crust, t. ii. p. 105 (1837). 



Rameswaram and Tuticorin {Tliurdun); Ceylon [Ilalij, Nevill) ; Gulf of Martaban 

 {Oates). 



There is a remarkable difference between the eyes in this species and in the last ; in 

 C. hepatica they are elongated and slender, in C. gallus short and stout. 



Distribution. Red Sea, Mascarenes, Malay Archipelago, Pacific. If C. galloides, Stm., 

 should prove identical, as ^Nliers supposes, it occuivs also in the "West Indies. 



168. Calappa lophos (Herbst). 



C. lophos (Herbst), De Haau, Crust. Japon. p. 72, tab. xx. fig. 1 (1850). . , 



Ceylon {Iluhj) ; Gulf of Martaban ( Oates) ; very common at Madras {J. B. H.). 



In young individuals the anterior half of the carapace is provided with smooth rounded 

 tubercles which are not seen in the adult. There is considerable variation in the size of 

 the granulated teeth on the posterior margin, and in very young specimens they are 

 represented by slender acute slightly curved spines. 



Distribution. Indian Ocean, Malay Archipelago, Japan. 



