224 Records of the Indian Museum. [Vol. XIII, 



more strongly upturned and is provided with one or two teeth on 

 its upper edge near the tip ' and sometimes with another between 

 this point and the foremost tooth of the basal series. The lower 

 margin bears from 3 to 5 teeth (usually 4),^ which are spread out 

 along its distal two-thirds and not restricted to the middle third 

 as in L. modestus (pi ix, fig. 2). 



(ii) The branchiostegal tooth of the carapace is entirely absent, 

 (iii) The tooth that terminates the outer margin of the basal 

 segment of the antennular peduncle extends much beyond the 

 produced, setose, antero-external portion of the segment. 



(iv) The accessory antennular ramus is very long, between 

 one and a quarter and one and a half times the length of the 

 peduncle. 



(v) The antennal scale is a little more narrowed apically and 

 is a trifle broader, less than three times as long as wide. 



(vi) The first peraeopods reach a little beyond the end of the 

 antennular peduncle ; the carpus varies from two to nearly two 

 and a half times the length of the chela. 



(vii) The carpus of the second peraeopods is much longer, 

 about one and a half times the length of either the ischium or the 

 chela. The fingers are about as long as the palm. The chela is 

 distinctly spooned in appearance ; when viewed from its inner 

 face the fingers are seen to be hollowed longitudinally, meeting 

 only along their outer edges. When the chela is examined in dorsal 

 and ventral views, the fixed finger and dactylus appear consider- 

 ably broader near the apex than at their junction with the palm. 



(viii) The last three pairs of peraeopods are very slender, but 

 in their proportionate lengths similar to those of L. modestus. The 

 dactylus in all three pairs is much shorter than the carpus, that 

 of the fifth pair being scarcely half its length and only about one 

 fifth the length of the propodus (c/. pi. ix, figs, i and 2). There 

 are fewer hairs on the propodus of the fifth leg and the dactylus in 

 all three pairs is without setae on its upper edge. 



Large specimens reach a length of about 45 mm. The eggs 

 are numerous and are comparatively^ small, from 0*74 to 0*87 mm. 

 in length and from 0"57 to o'65 mm. in breadth. 



The species resembles L. mani in the presence of teeth at the 

 distal end of the upper margin of the rostrum, but is readily dis- 

 tinguished by the absence of the branchiostegal spine and the 

 greater length of the carpus of the second peraeopods. 



The specimens in the Indian Museum are from the following 

 localities : — 



"^ R. Ganges, Mirzapur, L'nited Prov- 

 inces ... ,., ... i^v. B. S. Sew ell. Many. 



Types. 

 —^ Podhua Nala, Rajmahal, Bengal ... B. L. Chaudhuri. Two. 



' I have seen a single specimen without any dorsal teeth on the distal part 

 of the rostrum. 



'^ Of forty specimens four have 3 ventral teeth, twenty-nine have .\ and seven 

 have 5. 



