1899.] A, Alcock — CarcinoJogical Fauna of India. 155 



Enrop. p. 148 : Henderson, " Challenger " Anomura, p. 18: Ortmann, Zool. Jahrb, 

 Syst. etc. VI. 1892, pp. 540 and 542 and in Bronn's Tliier Reich, V. ii. Arthropoda, 

 p. 1156: A. Milne Edwards and Bouvier, " Hirondelle " Brachyures et Anomures 

 (Monaco 1894) p. 60: Alcock, Investigator Deep-Sea Brachyura/kp. 6. 



Carapace deep, longer than broad, quadrilateral or urn-shaped, with 

 deep vertical sides, the gastric region well demarcated and occupying 

 the anterior half of the carapace, tlie linea anomurica distinct and dorsal. 



Front narrow, forming a rostrum, which is either entire or bifid at 

 tip and has a spine, often of large size, on either side of its base. 



The orbits are quite incomplete and do not even conceal the eye- 

 stalks, and the eyes, which project far outside them, are retractile 

 against the sides of the carapace. The eye-stalks are long and are 

 composed of two joints, a slender basal joint, and a swollen terminal 

 joint that carries the eye, the terminal joint (with the eye) being nearly 

 as long as the basal joint. 



The epistome is fairly or very distinctly marked off from the palate. 

 The expiratory canals are very well defined. The external maxillipeds 

 are subpcdiform. 



The chelipeds are rather slender and generally somewhat spiny. 

 The legs are long and more or less compressed and spiny, the last pair 

 are subcheliform, but have the propodite dilated near the basal end and 

 never twice the length of the dactylus. 



The abdomen of both sexes consists of seven separate segments 

 and is rather broad. 



The branchial formula is as follows : — 



Somites and 



their 

 appendages. 



Podo- 

 branchise. 



Arthrobranchiae. 



Plenro- 

 branchise. 





Anterior. 



Posterior. 





VII. ... 



ep. 











= 



ep. 



VIII. ... 



1 + ep. 









= 



2-1-ep. 



IX. ... 



ep. 







= 



2 + ep. 



X. ... 



ep. 







= 



2 + ep. 



XI. ... 



ep. 







1 = 



3 + ep. 



xir. ... 



ep. 







1 = 



3 + ep. 



XIII. ... 













1 = 



2 



XIV. ... 















= 







1 + 6 ep. 5 5 3 = 14 + 6 ep. 



Bistnhution : West Indies and Atlantic coasts of N. America, 

 Azores and coast of Portugal : Mediterranean : East Indian Seas from 

 Cape Comorin to the Philippines. 



In my Account of the Investigator Deep Sea Brachytira, I have 

 proposed the following subdivision of the genus Homola : — 



1. Homola. Carapace square-cut, its broadest part being in front, 

 across the middle of the gastric region : the linea anomurica rather 

 J. II. 20 



