26 A. Alcock — Carcinological Fauna of India. [No. 1, 



Epistome sufficiently long. Buccal cavern squarish, broader than 

 long, the efferent branchial channels very well defined. 



Chelipeds longer and vastly more massive than the legs : arm with 

 spines, one or both angles of wrist spiniform ; palm inflated, massive, 

 nearly smooth : fingers stout, hardly as long as palm, strongly toothed. 



Legs slender : in the fourth pair the merus is elongate and the 

 carpus slender, but the propodite and dactylus are typical swimming 

 paddles. 



First abdominal tergum narrow, almost hidden by the carapace : in 

 the male the 2nd-5th terga are fused — though the suture between the 

 2nd and 3rd may be visible — so that the abdomen consists of 4 pieces 

 only. 



9. Carupa lasviuscula, Heller, 



Carupa Igeviuscula, Heller, Verb. zool. bot. Ges. Wien, XII. 1862, p. 520, and 

 Novara Crust, p. 27, pi. iii. fig. 2 : de Man, Notes Leyden Mas. V. 1883, p. 152, and 

 Archiv. f. Naturges. LIII. 1887, i. p. 336 : Ortmann, Zool. Jahrb., Syst. VII. 1893-94, 

 p. 68 and in Semen's Forschungsr. Crust. (Jena. Denk. VIII) p. 44 : Zehntner, Rev. 

 Suisse Zool. II. 1894, p. 161. 



Carapace about f as long as broad, perfectly smooth to the naked 

 eye, frosted with minute granules under the lens. 



Front cut into 4 shallow lobes, of which the middle two are the 

 narrowest. Supra-orbital margin with two notches, infra-orbital mar- 

 gin cut into four lobes of which the middle two are the narrowest. 



Antero-lateral borders cut into 7 teeth (including the outer orbital 

 angle), of which the 5th is the smallest and the 6th the largest and 

 most acute. The postero-lateral angles of the carapace are well de- 

 fined. 



Antennal fiagella more than half the length of the carapace. 



Chelipeds about 2^ times the length of the carapace, in the male : 

 arm short with 3 claw-like spines on the anterior border, the posterior 

 border being smooth : inner angle of wrist strongly spiniform, the outer 

 ano-le rounded, but armed with a spinule below : hand smooth, its upper 

 border well defined. 



In young specimens, as in the young of Scylla serrata, there may 

 be two faint costae or two lines of small granules along the upper 

 surface of the hand, and also there may be some costiform lines of 

 small granules on the upper surface of the wrist. 



The legs are slender and smooth : the last pair have only the last 

 two joints dilated for swimming. 



In the Indian Museum are two specimens (one badly damaged) 

 from the Andamans and one from the Madras coast — besides one from 

 Samoa and one from Mauritius. 



