100 MR. J. R. HENDERSON— A CONTRIBUTION 



small tubercles along the margins of the sternal segments. The basal abdominal seg- 

 ment is narrower and more _|_- shaped in the new species. The colour is brownish, 

 whereas in P. scabriuscula it is usually grey. 



The carapace is 8*7 mm. long and 10 mm. broad, the merus of the chelipedes 75 mm. 

 long by 3 mm. in width, the propodus 7 mm. long and 2*8 mm. wide. 



I have examined several hundred specimens of P. scabriuscula from different localities, 

 including Madras where the new species was taken, and have never seen a specimen 

 approaching the form just described ; I may add that I have never seen a specimen of 

 P. scabriuscula, variable as that species is in regard to tuberculatum, with the anterior 

 half of the carapace uniformly covered with tubercles or granules. 



179. Philyra Adamsii, Bell. 



P. Adamsii, Bell, Trans. Linn. Soc. vol. xxi. p. 301, tab. xxxiii. fig. 1 (1855). 



Rameswaram and Silavaturai Par, several specimens (Thurston) ; Gulf of Martaban, 

 a female (Oates). 



I have compared these with the type in the British Museum. The grooves separating 

 the branchial from the cardiac and intestinal regions of the carapace are deeper than 

 usual, and the regions which they define are in consequence apparently swollen. The 

 carapace in its posterior two thirds, especially on the more elevated parts, and towards 

 the lateral and posterior margins, is covered with small rounded granules. The whole 

 front, as in most species of the genus (but not as in P. scabriuscula and P. verrucosa), 

 projects in advance of the eyes, and is scarcely shorter than the epistome ; the median 

 frontal projection is distinctly visible when the carapace is viewed from above. The 

 external maxillipedes are much less dilated than in P. scabriuscula, and the exognath 

 is granulated. The granules on the merus of the chelipedes are more numerous, but 

 not so large as in P. scabriuscula ; both the inner and outer surfaces of the hand are 

 granulated, and there is a distinct line of granules towards the upper limit of the inner 

 surface. In the adult male there are two distinct granules on the upper surface of the 

 palm, opposite the base of the immobile finger. 



Adult $ . Adult $ (with ova) . 

 millim. millim. 



Length of carapace 95 7 



Breadth „ 10 7'5 



Length of right chelipede 23 11 



Distribution. Borneo (Brit. Mus.). 



180. Philyra platycheira, De Haan. 



P. platycheira, De Haan, Crust. Japon. p. 132, tab. xxxiii. fig. 6 (1850). 



Silavaturai Par, three males and three females with ova (Thurston). 



The immobile finger of the chelipedes bears on its inner margin a very characteristic 

 fringe of hairs, both shown in De Haan's figure and mentioned in his description, by 

 means of which the species is easily recognized. 



