4Ö CARCINOLOGICAL STUDIES. 



in the seven male individuals before rae , on four different 

 manners, and on this reason I named this variety » varia- 

 bilis". In two specimens the lower finger bears two teeth 

 which stand, on the proximal half of the margin, 

 at a small distance from one another, the smaller tooth 

 quite at the base, the second, which is slightly larger, 

 immediately before the middle of the margin. The longer 

 distal end presents fourteen or fifteen granules, the fifth 

 of which (counting from the tip) is a little more promi- 

 nent than the others. In these individuals the upper fin- 

 ger is armed, quite at the base , with two teeth which are 

 smaller than the opposite teeth of the index , and with 

 two or throe prominent granules near the distal end. 



In three other specimens the proximal smaller tooth of 

 the two of the lower finger lies also quite at the base , 

 but the other is found exactly in the middle of the 

 margin. The upper finger presents several granules, like 

 in the first variety, three or four of which are a little 

 more prominent than the others. One specimen differs 

 from the three last described ones only by the absence of 

 the basal tooth of the lower finger , and in the last spe- 

 cimen , finally , the teeth are entirely absent on both fin- 

 gers. In this specimen the row of granules at the inner 

 surface of the palm near the base of the fingers is not 

 developed , in the other ones it is also less distinct than 

 in the Mergui specimens. 



The ambulatory legs are a little more slender than those 

 of the type-specimens, the meropodites as well as 

 the other joints appearing a little less en- 

 larged. 



The upper surface of the cephalothorax has a reddish 

 gray ground-colour, and is marked with a few transverse 

 purplish stripes'. The larger hand is uniformly yellowish. 



The occurrence of this variety at Amboina is to a cer- 

 tain degree remarkable, as the typical form occurs in New 

 Caledonia and in the Mergui Archipelago. 



Notes from the Leyden JMixseum , "Vol. XIII. 



