110 CARCINOLOGICAL STUDIES. 



The upper margin of the wrist of the left chelipede 

 terminates in a small sharp tooth, and the upper surface 

 presents a tubercular eminence, which occurs also in other 

 species of this genus and which is separated from the up- 

 per margin by a groove. The larger hand is scarcely com- 

 pressed , the palm is quite as long as high and the fingers 

 are a little shorter than the palm. The outer surface of 

 the palm is slightly convex and smooth , the upper margin 

 more or less rounded, like the lower margin. The fin- 

 gers , when closed , only leave a small hiatus between 

 themselves and are covered everywhere with very small tuber- 

 cles , which are more or less rounded and of different size ; 

 the mobile finger is armed with three teeth , which decrease 

 in size towards the tip , the index presents also two or 

 three teeth. A few small tubercles, similar to those of the 

 fingers , are seeu on the distal part of the outer surface of 

 the palm. 



The lower margin of the outer surface of the arm of 

 the right chelipede presents two or three spinules a little 

 before the distal end ; the acute upper margin of the wrist 

 presents two very small spinules and terminates in a so- 

 mewhat larger one. The compressed right hand presents 

 about the same form as in other species of this genus. 

 The sharp upper edge is armed with five teeth; the palm 

 is a little higher than long and nearly as long as the 

 fingers. 



The upper margin of the mobile finger presents two 

 rows of sharp small teeth , and similar, more or less acute 

 and small tubercles exist on the distal part of the outer 

 surface of the palm ; the index, finally, is also every where 

 beset with small tubercles. The right hand is somewhat 

 hairy on the upper as well as on the lower margin. 



The dactylopodites of the second pair of legs are a little 

 shorter, those of the third pair about as long as the pro- 

 podites. These two pairs of legs are hairy at their infe- 

 rior margin and the dactylopodites and propodites of the 

 third pair especially are covered with dense and long hairs. 

 Notes from the Leyden JMuseum, Vol. X![I. 



