2 20 



Records of the Indian Museum. 



[Vol. XIII, 



(ii) The fingers of the first peraeopods are a little longer, fully 

 one and a half times the length of the palm. 



(iii) The carpus of the second peraeopods is proportionately 

 shorter; except in very large males it is shorter than the palm and 

 little more than half the length of the fingers. 



(iv) The dactyli of the last three peraeopods are proportion- 

 ately much longer. In the third pair (text-fig, 6c) the propodus 

 is only one and a fifth times and in the fifth pair (text-fig. 6d) only 

 two and a fifth times as long as the dactylus 



(v) The last four abdominal somites are sharply carinate 

 dorsally. 



The rostrum is broken in all except two of the specimen^. In 

 these there are respectively 7 and 8 ventral teeth ^ and in both 

 there appears to have been a single small subapical dorsal tooth. 



Doflein appears not to have seen any fully developed males. 

 In large examples of this sex the second peraeopods may reach 

 beyond the antennal scale by the whole of the carpus and chela ; 

 the degree of development of these limbs is, however, as in L. styli- 

 ferus, subject to much variation. Five specimens yield the fol- 

 lowing measurements (in mm.): — 



The second peraeopods as a whole bear a close resemblance 

 to those of L. styliferus ; in specimens in which the limb is rela- 

 tively long the carpus is swollen at its distal end and the palm in- 

 flated. The proportionate length of the segments is variable, but 

 the carpus appears always to be shorter than in the related species. 



The best distinctive character is to be found in the great rela- 

 tive length of the dactylus of the last three pairs of peraeopods. 

 In these limbs the length of the dactylus, compared with that of 

 the propodus, is nearly twice as great as in L. siyUfeyus {text-fig. 6). 

 The third peraeopods reach almost to the end of the antennular 



' Ortmann states that there are 5 ventral teeth and Doflein that there are 4 

 or 5. Balss has, however, remarked that the rostrum was incomplete in all the 

 specimens seen by Doflein. 



