CRUSTACK \. 525 



distinctively characterizing the variety haani, which is connected 

 with M. thalia by insensible gradations. 



Specimens referred by Dr. P. Richters to M. thalia, l)e Haan, 

 from Fouqnets, may probably belong to this variety ; but the length 

 of the supraocular spines is not mentioned. 



12. Paramicippa asperimanus. 



I thus designate a series of specimens from Providence Island, 

 19 fms. (jNTo. 217), and a small female from the Seychelles, 4-12 

 fins. (No. 194). 



These specimens in all their characters so nearly approach the 

 typical Paramicippa platypes, Riippell, from the Red Sea, of which 

 they may prove to be a variety, that a detailed description is scarcely 

 needed. They scarcely differ except in the form of the rostrum, 

 which is much less deeply emarginate at its distal extremity, with 

 the terminal lobes less acute ; in the slenderer chelipedes of the 

 male, whose merus-joint is longer, wrist minutely granulated on 

 its inner and outer surface, and palm more elongated, granulated 

 on its inner surface and without the characteristic coloration of 

 M. platypes : and in having the distal extremity of the dilated basal 

 antennal joint armed with a series of spinules, which are visiblo from 

 above between the rostrum and the orbital cavity. In this latter 

 character this species approaches Micippa philyra, Herbst. from 

 which it is distinguished by the dilated palms and arcuated fingers 

 of the chelipedes in the male and much more deeply emarginate 

 front. It seems, in fact, to occupy an intermediate position be- 

 tween the two forms— which, however, can hardly be conspecific, 

 since an adult male in the Museum collection of M. philyra, with 

 slender feeble chelipedes, is of larger size than the males with strong 

 dilated chelipedes of P. platypes and P. asperimanus. The specimen 

 figured by Richters * as M. philyra, var. latifrons, seems to be an 

 adult male Paramicippa platypes. I cannot identify P. asperimanus 

 with any of the "varieties" recently figured by Kossmann f ; the 

 variety designated Micippa philyra, var. mascarenica, is distinguished 

 by the much deeper notch of the anterior margin of the rostrum, and 

 nothing is said of the form of the chelipedes in this form. 



The British Museum, since the above was written, has received 

 an adult male of very large size from the Mauritius (M. V. cle 

 Eobillard), in which the rostrum is as deeply notched as in the typical 

 M. platypes, and the palms of the chelipedes strongly granulated both 

 on the inner and outer surfaces. 



ENTOMONYX, gen. nov. 

 Carapace subpyriform. Rostrum obliquely deflexed and com- 



* In Mobius'a 'Beitrage zur Fauna der Insel Mauritius und der Seychellen,' 

 Decapoda, p. 142, pi. xvi. figs. 1-5 (1880). 



t ' Zool. Ergebnisse .... rothen Meeres,' Brachyura, p. 6, pi. iii. figs. 1, 

 3, 4, 5 (1877). 



