206 Carcinological Fauna of India. 



(2) the chelipeds are stouter and shorter, being a little less than 

 twice the length of the cax'apace (without spine) ; the hand especially 

 is stouter and shorter, being hardly half the length of the carapace ; 

 the fingers are about § the length of the hand : 



(3) the long penultimate piece of the male abdomen carries a strong 

 terminal tooth. 



Colours in spirit : some reddish or orauge markings on the cara- 

 pace, and some broad orange-reddish cross-bands on the chelipeds. 



The largest adult male in the Indian Museum collection has the 

 carapace 17 millim. long and 15 millim. broad. 



In the young the intestinal region is distinctly delimited, rather 

 tumid, and is surmounted by a raised cluster of granules terminating, 

 but discontinuous with, the median carina of the carapace. 



In the Indian Museum, collection are 16 specimens from Arakan, 

 Mergui, Andamans, Granjam coast, and the Persian Gulf. 



The specimens here included comprise (L) adult forms that answer 

 to Bell's descriptions and figures of M. affinis and are readily distin- 

 guishable from M. fugaz (a) by the relative stoutness and shortness of 

 the chelipeds and hands and (b) by the shortness and coarseuess of the 

 spines, and (2) half-grown forms that correspond with Haswell's figure 

 of M. australis, and Miers' figures of M. mamillaris (loc. cit.) which 

 Miers in his work on the ' Challenger ' Brachyura refers to M. australis. 

 Although Haswell's figure and description hardly correspond — e.g., the 

 fingers are described as being about half the length of the hand, but 

 are figured as nearly equal to the hand in length — 1 cannot but think 

 that his species represents the immature form of M. affinis. 



In very young specimens there is a denticle or enlarged granule on 

 either postero-lateral margin above the last pair of legs. 



43. Myra brevimana, n. sp. 



Differs from M. fugax, a large series of fully adult males and 

 ovigerous females being compared, in the following characters : — 



(1) the carapace is much more convex, being ovoid in the male, 

 subglobular in the female ; its surface, including the surface of the sub- 

 hepatic facet, is crisply granular and its longitudinal median carina is 

 persistent and granular, as in M. affinis ; the posterior marginal spines 

 are as in M. affinis, the middle one being short stout acute and recurved, 

 the lateral ones being dentiform : 



(2) the front is much more deeply and acutely bidentate, and 

 otherwise is shaped much as in Leiicosia, beiug strongly convex, being 

 delimited from the hepatic regions on either side by a hollow, being 

 Avell recurved upwards, and projecting so far that no part whatever of 



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