118 CARCINOLOGICAL STUDIES. 



naraented with rather long ciliae. The penultimate joint 

 is only half as long as the terminal. In the male the 

 larger chelipede is found on the right side , in the female 

 on the left. The meropodite of the larger chelipede of 

 the male is strongly compressed , the inner surface is even 

 slightly concave. The wrist is short, rounded. The larger 

 hand is a little extroverse. The palm is cylindrical , scar- 

 cely a little compressed , and hut little higher than broad ; 

 it is rounded on the upper as well as on the 

 lower margin, smooth, without notches, and 

 unarmed. The fingers are considerably shorter than the 

 palm , their horizontal length being in proportion to the 

 length of the palm as 3:5. The upper margin of the 

 mobile finger is arcuate and this finger presents the same 

 form as in the allied species. The rounded inferior margin 

 of the chela is somewhat hairy , as also a part of the upper 

 margin , and the fingers are also hairy. The hand of the 

 smaller chelipede is much shorter than the other, scar- 

 cely half as long: like the other, it is a little extroverse. 

 The fingers are a little shorter than the palm. The upper 

 margin of the mobile finger is somewhat dilated, and has 

 an acute point. The inner side of this chela is also some- 

 what hairy. 



The larger hand of the female resembles that of the 

 male, but the fingers are a little shorter than half the 

 length of the palm and this hand appears to be less 

 hairy. The other chela is small and shorter than half the 

 length of the larger hand; the fingers are, as in the 

 male, somewhat shorter than the palm, the mobile finger, 

 however, is not enlarged above, and palm and fingers are 

 hairy on the inner side. 



Stimpson describes the fingers of the larger hand as 

 shorter than half the length of the palm : as I observed , this 

 is not the case in the male specimen , but the female agrees 

 with Stimpson's definition. The smaller hand of the male is 

 described by Stimpson as presenting half the size of the 

 larger , »valde robusta, digitis palma non bre- 



Notes from tlie Leyden Museuin, "Vol. XII. 



