250 A. Alcock — Carcinological Fauna of India. [No. 2, 



75. Pseudophilyra tridentata, Miers. 

 Pseudophilyra tridentata, Miers, P. Z. S. 1879. pp. 20, 41, pi. ii. fig. 4, 



Carapace subpiriform, its dorsum coarsely closely and uniformly 

 punctulate everywhere except near the tip of the front, and defined all 

 round behind the antero-lateral margins by a minutely-beaded line. 



The front projects well beyond the margin of the buccal cavern 

 and ends in three laminar teeth, the middle one of which is much the 

 largest. The external orbital angles are acute, but do not reach the 

 level of the frontal teeth. Posteriorly the frontal region extends 

 straight backwards, between the hepatic regions, as a ridge, which is 

 particularly conspicuous in the male. On either side of this ridge the 

 hepatic regions are much depressed, but behind the depressions they 

 form distinct mamillary elevations. 



In the male the anterior and lateral margins of the sternum are 

 indistinctly punctate, and the edges of the fossa in the first segment 

 that lodges the tip of the abdomen are very finely beaded : in the female 

 only the front border of the sternum is punctulate. 



The chelipeds in the adult male are about If times the length of 

 the carapace : the upper surface of the arm is irregularly granular in 

 its basal half, punctulate in its distal half; the inner surface is covered 

 •with tiny vesicular granules in its basal half, the under surface is 

 smooth : the wrist and hand are smooth, the hand about half as long 

 again as broad : the fingers, which are as long as the hand is broad, 

 meet only at tip and have the opposed edges almost smooth. 



The first pair of true legs exceed the arms in length by almost the 

 last two joints. 



The male abdomen is narrow and triangular and consists of 4 

 pieces, but the two proximal pieces are linear and concealed : the long 

 third piece has a median tooth near the distal end. 



The carapace of the male measures 10 by 8 millim., that of the 

 female ll'Sby 10 millim. 



Colours in spirit : pinkish grey mottled with reddish and yellowish 

 brown ; spotted cross-bands of brown on arms and hands, and a cross- 

 band of reddish brown on the fingers. 



In the Indian Museum collection are two adult males and four 

 adult females from the Persian Grulf. 



76. Pseudophilyra wood-masoni, n. sp. Plate VI. fig. 3. 



Carapace subpiriform, perfectly smooth and polished, its dorsum 

 defined all round behind the hepatic regions by a faintly raised, smooth 

 (microscopically granular) line. 



