1900.] A. Alcock — Carcinologieal Fauna of India. 337 



The abdomen of the male is narrow and consists of 7 segments : the 

 first two segments are very short, the 3rd 4th and 5th gradually 

 increase in length and slightly decrease in breadth, the 6th is a little 

 shorter than the 5th, and the 7th is long and spathulate and encroaches 

 on the buccal cavern. 



In the Indian Museum is a single male specimen, from coral, from 

 the Audamans: its carapace is a little over 5 millim. long and 7 millim. 

 broad. 



Subfamily Pinnoterin^. 



*Pinnoteres, Latreille. 



Pinnotheres, Latreille, Hist. Nat. Crust, et Ins. VI. p. 78, and Gen. Crust, et 

 Ins., p. 34: Lamarck, Hist. Nat. An. Sans. Vert. (2nd edit. Vol. V. p. 410) : Bosc, 

 Hist. Nat. Crust. I. p. 239: Leach, Malac. Pod. Britt. : Desmarest, Consid. Gen. 

 Crust, p. 116: De Haan, Faun. Japon. Crust., p. 34 : Milne Edwards, Hist. Nat. 

 Crust. II. 30, and Ann. Sci. Nat., Zool., (3) XX. 1853, p. 216 : Dana, U. S. Expl. 

 Exp. Crust, pt. I. p. 378: Bell, British Stalk-eyed Crust, p. 119 : Miers, Challenger 

 Brachyura, p. 275 : Ortmann, Zool. Jahrb., Syst., VII. 1894, p. 698 : Burger, Zool. 

 Jahrb. Syst., VIII. 1894-95, p. 362 : Adensamer, Ann. Nat. Hofmus., Wien, 1897, 

 p. 105. 



Carapace often ill calcified, generally convex with ill- defined edges, 

 in shape transversely oval, or circular, or subquadrangular or sub- 

 hexagonal with rounded angles, the surface generally smooth, the 

 regions seldom defined. 



Front narrow, generally deflexed in the female if not in the male. 

 Orbits small, circular, eyestalks short, eyes small. Antennules folding 

 obliquely in small pits. Antenna) small, the minute flagellum standing 

 in the inner angle of the orbit. 



Epistome well defined. The buccal cavern is of a curious crescentic 

 shape, being arched and very broad from side to side, but very narrow 

 fore and aft. The external maxillipeds completely close the buccal 

 cavern : they consist chiefly of the merus, which is fused with the 

 ischium to form a single large obliquely-directed joint carrying the 

 flagellum at its inner end : the flagellum is small though its propodite 

 may be spathulate, and the dactylus is often inserted on the inner or 

 flexor border of the propodite : the exognath is for the most part 

 concealed. 



The chelipeds and legs are short, the chelipeds being equal and 

 generally, even in the female, stouter than the legs. 



The abdomen in the male is narrow, in the female it is generally 

 larger than the sternum : it consists of 7 separate segments. 



* Pinnoteres, the correct transliteration of the Greek word, was used by Rumph 

 in 1705, so that no apology is necessary for reverting to it. 



