164 A. Alcock — Carcinological Fauna of India. [No. 3, 



A single female, with the carapace 18 millim. in diameter from the 

 Bay of Bengal, off Nellore coast, 112 fathoms. 



20. Sphaerodromia nux, n. sp. 



Differs from SpJiserodromia KendalU only in the following part- 

 iculars : — 



The carapace though of the same subglobular shape is a little 

 broader than long; and the antero-lateral border, instead of running to 

 the orbital angle, runs down without interruption to the outer angle of 

 the buccal cavern. The surface of the carapace, especially in its antero- 

 lateral parts, is finely granular under a lens. The sub-orbital lobe is 

 neither dentiform nor prominent. 



A male and a female from the Gulf of Martaban, 70 fathoms. 



The carapace of the female is nearly 10 millim. long and nearly 

 11 millim. broad. 



Tribe HOMOLIDEA. 

 Family I. HOMOLID^. 



Key to the Indian genera of the Family Homolidse. 



I. Carapace ovoid. External maxillipeds quite pediform : 

 terminal joint of the eye-stalk very much longer than the 

 basal joint, which is obsolescent : dactylus of last pair of 

 legs very small, and shutting dovrn on the slightly ex- 

 panded distal border of the propodite ... ... Hypsophrys. 



II. External maxillipeds subpediform, the merus, thongh not 

 a broad joint, having its outer angle distinctly dilated : 

 terminal joint of the last pair of legs shutting against the 

 posterior border of the propodite : — 



1. Carapace subquadrilateral, or urn-shaped, not de- 

 pressed ; its hepatic spine some distance behind 

 the level of the supra-orbital spine : the terminal 

 joint of the eye-stalk is not always quite as long 



as the basal joint ... ... ... Homola. 



2. Carapace urn-shaped, depressed ; its hepatic spine 

 almost on the same level as the supra-orbital 

 spine : the terminal joint of the eye-stalk " is a 



little longer than the basal joint ... ,., Paromolopsis. 



Homola, Leach. 



Eomola, Leach, Trans. Linn. Soc, Vol. XI. 1815, p. 324, and Zool. Miscell. Vol. 

 II. p. 82, pi. Ixxxviii : Latreille, Nouv. Diet. d'Hist. Nat. XV. 1817, p. 277, and in 

 Cuvier's Regno Animal, ed. 1829, p. 67 : Desmarest, Consid. Gen, Crust, p. 133 : 

 Risso, Hist. Nat. Europ, Merid. Vol. "V. pp. 34-35 : Roux, Crust, de la Mediterranee 

 text of pi. vii : Milne Edwards, Hist. Nat. Crust. II, 181: deHaan, Faun. Japon. 

 Crust, p. 105: Dana U. S. Expl, Exp. Crust, pt. I. p. 403: Heller, Crust. Sudl . 



