"Wood-Mason (Ann. Mag. Nat. Hist. March 1891, p. 267) separated Homola 

 cuvieri from Homola harbata, basing his opinion on the form of the carapace, 

 the position of the linea anomurica, and the form of the terminal joints of the last 

 pair of legs. 



He appears to have regarded the hollowed out portion of the carapace 

 against which the eye can rest in retraction as a commencing orbit, — a view that 

 seems to me to be more than doubtful. 



I agree with him, however, that the differences between the two forms are 

 of more than specific importance, and I am inclined to maintain Paromola as a 

 subgenus. The form described by me in Ann. Mag. Nat. Hist. May 1894, p. 408, 

 as Homola ynegalojjs now seems to me to be also worthy of subgeneric rank. 



These three sections of the genus Homola may be thus characterized : — 



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

 the middle of the gastric region : the linea anomurica rather inconspicuous, 

 keeping close to the lateral border. Eostrum a non-cylindrical bifid tooth, with 

 a smaller spine on either side of its base. 2nd joint of antenna-peduncle having 

 its antero-external angle produced to form a spine. Palate distinctly delimited 

 from the epistome everywhere except in the middle line. The last pair of legs 

 reach to the end of the carpus of the preceding pair. 



Type Homola barhata (Herbst.) 



HojroLAX. Carapace urn-shaped, its greatest breadth being behind, across 

 the middle of the branchial regions : the linea anomurica conspicuous, running 

 well inside the lateral border. Rostrum as in Homola. 2nd joint of antenna 

 peduncle having its antero-external angle acute, but not spiniform. Palate as 

 well demarcated from the epistome in the middle line as it is elsewhere. The 

 last pair of legs reach beyond the end of the carpus of the preceding pair. 



Type Homola megalops, Alcock. 



Paromola Wood-Mason. " Carapace decidedly macrurous in form," its 

 greatest breadth being behind : the linea anomurica \erj conspicuous and well 

 inside the lateral border. Rostrum a simple cyKndrical spine of large size 

 flanked on either side by a single spine of equal or greater size. 2nd joint of 

 antenna-peduncle not produced or specially acute at the antero-external angle. 

 Palate everywhere well demarcated from the epistome. The last pair of legs 

 not reaching beyond the end of the merus of the preceding pair. 



Type Homola cuvieri, Roux. 



Subgenus Homola. 



Homola andatnanica, n. sp. ? 



This may, very possibly, prove the same as Homola orienfalis Henderson, 

 though it cannot be quite reconciled with the description, still less with the 

 figure, of that species. ' 



