8 Mr. E. J. Miers on the 



The specimens which, with much doubt, were designated 

 M. asperimanus in the Report on the Crustacea of H.M.S. 

 1 Alert/ cannot be regarded as specifically distinct ; it may 

 be, indeed, that the examination of a series of specimens 

 would show that M. mascarenica must itself, after all, be 

 regarded (as its author considers it to be) as a mere variety of 

 M. philyra. 



Micippa sjjinosa. 



Micippa spinosa, Stimpson, Proc. Acad. Nat. Sci. PMlad, p. 217 (1857); 



Haswell, Cat. Austr. Crust, p. 20 (1882). 

 Paramicippa spinosa, Miers, Cat. New-Zeal. Crust, p. 9 (1876) ; Crust. 



in Rep. Zool. H.M.S. ' Alert/ p. 199 (1884). 



In this species the carapace is depressed, somewhat uneven, 

 closely and coarsely granulated on its dorsal surface, which, 

 both in the male and female, is armed with long spines dis- 

 posed as follows : — three in the median line, of which two 

 on the gastric and one on the cardiac region, and a strong 

 spine on the postero-lateral margins of each branchial region, 

 between which and the well-developed postoeular spine there 

 are from six to nine smaller spines on the lateral margins of the 

 carapace ; the posterior margin is spinuliferous ; the spinules 

 usually continued in a lateral series beneath the lateral 

 branchial spines and above the bases of the two posterior 

 ambulatory legs. The fissures of the superior orbital margins 

 are narrow and deep. The pterygostomian regions are granu- 

 lated. The rostrum is obliquely deflexed and widens slightly 

 from the base to the antero-lateral angles, which are broadly 

 rounded ; it is armed at its distal extremity with two small 

 teeth, which are separated by a rather deep triangular notch. 

 The basal antennal joint is smooth externally, but granulated 

 on its distal margin ; the next joint is not dilated ; the merus 

 of the exterior maxillipedes is broadly rounded at the antero- 

 external angle. The chelipedes (in the adult male) are mode- 

 rately developed ; merus not distally carinated but granulated; 

 carpus and palm granulated, the palm rather short and en- 

 larged, fingers meeting only at the apices with a wide inter- 

 marginal hiatus ' T the ambulatory legs are hairy, merus with 

 a small spinule at the distal extremity. An adult male has 

 the following dimensions : — Length of carapace to base of 

 rostrum nearly 8 lines (17 millim.) ; breadth of carapace nearly 

 1\ lines (15'5 millim.) ; length of a chelipede 9^ lines (20 

 millim.) ; of first ambulatory leg nearly 12 lines (25 millim.). 

 Hub. East and South Australia (in shallow water, not 

 exceeding 15 fathoms, H.M.S. l Challenger 1 ): New Zea- 

 land [coll. Brit. Mus.). 



