'252 CARCINOLOGICAL STUDIES. 



is somewhat flattened and everywhere granu- 

 lated, and the granulation continues till near the tip of 

 the finger. The inner margin , which is somewhat hairy 

 on the dilated proximal part, is armed with a small tooth 

 a little beyond the middle , with a second somewhat smaller 

 one immediately before the tip and with two or three 

 very small ones between the two larger. 



The lower finger has not the ordinary conical shape as 

 in most other species of the genus , but is very high 

 (broad), broader than the mobile finger. Its outer sur- 

 face is smooth, but the under margin and the inner 

 surface are somewhat granular; this finger is slightly 

 compressed laterally. Its inner margin is armed in 

 the middle with a conical tooth, which is scarcely greater 

 than the opposite largest tooth of the mobile finger, with 

 a smaller conical tooth immediately before the tip and 

 with three still smaller ones between them , of which the 

 middle is a little larger than the two others. 



In young males, the cephalothorax of which is only 10 

 mm. long , the upper finger appears still hardly dilated and 

 the index presents still the usual conical form. The inter- 

 esting characters of the fingers of the adult male are also 

 wanting in the female and the upper finger appears only 

 a little granular at its base. 



The ambulatory legs resemble those of Ses. guadrata 

 Fabr. The meropodites are somewhat granular or trans- 

 versely rugose on their outer surface, the upper margin of 

 which ends into a sharp tooth while the under margin is 

 entire, as usual. They are considerably enlarged, 

 so that e. g. those of the antepenultimate pair 

 are half as broad as long. The two following joints 

 are also stout and by no means slender, so that 

 e. g. the propodites of the antepenultimate 

 pair are a little more than twice as long as 

 broad. The dactylopodites of all the legs are a little 

 shorter than the propodites. The three last joints are 

 somewhat hairy along their margins. 



!N'otes from the Leyden JMuseum, "Vol. XIV. 



