163 



Lengtli of tlie body 



Length of the meriis 



Length of tlie carpus 



Widtli of the carpus at its distal extremity . 



Length of the chela 



Length of tlie palm 



Width of the palm 



Length of the fingers 



52 

 5,1 

 4,3 

 0,8 

 7,3 

 3 

 1,1 



2,43 

 1,43 



51 



4,8 

 4,4 

 0,78 

 7,3 

 3,2 

 1,1 

 4,1 

 1 

 2,5 

 1,3 



50 

 4,9 

 4,6 

 0,7 

 G,94 

 3,3 

 1,04 

 3,64 



1 



3 

 1,1 



50 

 4,9 

 4,3 

 0,78 

 7,36 

 3,3 

 1,06 

 4,06 

 1 

 2,4 

 1,23 



Carpus shorter than chela 



Length of the fingers in proportion to the pahn 



These numbers furtlicrmore demonstrate tbat the earpua appears, 

 in proportion to the chela, even shorter than in the niales from 

 the IToUandscli Diep. The 2^1 logs of these specimens mucli resemble 

 those of the niediterraiiean Leander :r/j)hias (Risso). 



The female from the west coast of Wak^beren agrees with the 

 specimens from the Ilollandscb Diep. 



The specimen from Biarritz, finally, was, of course, of great 

 importanco, because tbis locality is situated not far from the mouth of 

 the river Gironde, from where L. longlrostrls bas first been recorded. 

 It is a young female without eggs, 54 mm. long. The rostrum 



with tlie formula , reaches 1,5 mm. beyond the antennal 



scales and runs straight forward, though the distal third is sligbtly 

 upturned. The shorter ranius of the outer antennular flagcllum 

 is typical and projects by two-fifths its length beyond apex of 

 rostrum. The legs of the l^t pair are as long as the antennal 

 scales, while those of the 2<l project by the chela and one-third 

 of the carpus beyond them ; the carpus is 6,8 mm. long, the 

 chela S mm. (palm 4,4 mm., fingers 3,6 mm.). 



Tlie legs of the 3''^ pair project by the dactyli beyond the 

 antennal scales, those of the 5tt> by the dactyli and '/^ of the 

 propodi. 



'12 



