1916.] S. Kemp : Notes on Crustacea Decapoda. 367 



long, more than twice the length of the carpus ; the chela is a little 

 shorter than the carpus. The fingers are a trifle shorter than the 

 palm; they are of equal breadth, without definite cutting margins, 

 and each bears at its apex a single stout seta serrated on the inner 

 side. 



The third peraeopods reach beyond the end of the first by the 

 two ultimate segments. The carpus is one third the length of the 

 merus and is a little shorter than the propodus and dactylus com- 

 bined. In the fourth pair the propodus is the longest segment, 

 nearly a quarter longer than the merus, a trifle longer than the 

 carpus, and about ry times the length of the dactylus. 



The abdomen is quite smooth, without trace of sculpture; the 

 lower margins of the pleura are rounded. The pleopods resemble 

 those of P. lowisi. The endopod of the last four pairs in the 

 female is greatly reduced and shows no trace of an appendix in- 

 terna. In the male the endopod is better developed and in all 

 four pairs is provided with a well formed appendix. 



The outer uropod is shorter than the inner and is about three 

 times as long as broad; its external margin is without setae, 

 except for a few at the distal end. The telson reaches about as 

 far as the outer uropod and is not sulcate above. It bears two 

 pairs of dorso-lateral spinules and the apex is similar to that of 

 P. iiicisus. 



Living specimens were as a rule almost pure white with a nar- 

 row transverse brown band on the tail-fan. 



~rV"" Pot"' Blair, Andamans. S. Kemp. 2 (^ . 4- ?, 7-10 mm. 



The type specimens bear the number 9082/10. 



Pontophilus pilosus, sp. nov. 

 (Plate viii, fig. 4.) 



The rostrum is well developed and reaches almost to the end 

 of the eyestalks. It is deeply hollowed longitudinally and tapers 

 to a narrow rounded apex. On its ventral side there is a deep 

 vertical keel, extending downwards between the eyestalks. The 

 keel ends abruptly a little behind the apex where it bears a tuft 

 of long setae. 



The carapace is everywhere clothed with a fine pubescence, 

 which, over the greater part of the surface, is comparatively short, 

 but becomes more conspicuous laterally and on the antero-lateral 

 portions takes the form of long silky hairs. There are three pro- 

 '^urved teeth in the mid-dorsal line, but no carina. The first two 

 of these teeth are placed rather close together in the anterior half 

 of the carapace, while the third i> in the middle of the posterior 

 half. Behind the antennal spine, which reaches almost as far for- 

 ward as the rostrum, there are two small teeth placed one behind 

 the other in the latitude of the first tooth of the mid-dorsal series. 

 Below these there is a stout hepatic tooth which overhangs a deep 

 sulcus — the lateral continuation of the transverse post-rostral 



