Carcinological Fauna of India. 229 



Godeffroy, there are, in the Indian Museum collection two apparently 

 adult males dredged, one off the south coast of Ceylon in 34 fathoms, and 

 the other from the Persian Gulf. 



The carapace of the latter is S'5 niillim. long and 8'5 millim. broad. 



59. Leucosia hxmatosticta, Adams and White. 



Zeucosia lueniatoaticta, Adams and White, Zool. ' Samarang,' Crust, p. 51, 

 pi. xii. fig. 2 : Bell, Trans. Linn. Soc. Vol. XXI. 1855, p. 289, and Cat. Lencos. Brit. 

 Mas. p. 8: Stimp3on, Proc. Acad. Nat. Sci. Philad. 1858, p. 160: Miers, P. Z. S. 

 1879, pp. 20 and 4 J : A, 0. Walker. Journ. Linn. Soc, Zool., Vol. XX. 1890, p. 111. 



Carapace sharply hexagonal, elegantly urn-shaped, its breadth 

 equal to its length ; its surface smooth except for a strip of thick short 

 harsh white fur, which extends from the lateral epibranchial angle along 

 the whole length of the true posterior border ; its antero-lateral borders 

 slightly concave and smooth, or very faintly milled ; its true postero- 

 lateral border ending abruptly at the level of the base of the second 

 pair of legs (3rd pereiopods) ; its thickened milled epimeral edge, which 

 is contitmous with the posterior margin and ends at a sharp tooth just 

 behind the base of the chelipeds, is visible, dorsally, in all its extent, 

 when the carapace is held, without any inclination, straight in front of 

 the observer's eyes ; its posterior margin perfectly straight, with the 

 outer angles well defined, and with the deflexed surface below it perfect- 

 ly smooth. 



The thoracic sinus is a simple cavity, defined in front by the smooth, 

 very oblique, slightly convex edge of the pterygostomian plate : it is 

 more or less filled with hair and is devoid of granules large enough to 

 be seen with the naked eye. 



The front is prominent, dorsally convex, much broader than long, 

 and has its sinuous front margin strongly deflexed. 



The chelipeds in the adult male are about one half as long again 

 as the carapace. The upper surface of the trigonal arm has a single 

 line of tubercles along its inner border, and a partly-fused double row 

 along its outer border ; at its base are some small tubercles hidden in 

 a well-defined patch of encrusting spongy pubescence, of a whitish 

 colour, from which two or three tubercles run forward to the inner 

 border. The ventral border of the arm is tubercular, the tubercles 

 arising somewhat profusely in a dense patch of spongy pubescence ; the 

 inner and under surfaces are quite smooth. The wrist is smooth, except 

 for one or two tiny grauules along its inner edge. The hand is a little 

 longer than broad, its inner surface has a single row of granules, which 

 is continued some way along the immobile finger. The fingers are 

 about as long as the hand, and are somewhat hairy : their opposed edges 



234 " 



