CARCINOLOGICAL STUDIES. 21 



^y. Lower finger with two teeth. 

 5. Lateral margin arcuate 

 in the shape of an 5. 

 Frontal furrow narrow. . arcuatus de Baan. 

 55. Lateral margin nearly 

 straight, very oblique. 

 Frontal furrow broad. . acutus Stimps m. 



AA. Lower wall of the orbits ornamented 

 with an accessory row of granules. 

 Cephalothorax more or less narrowed 

 backwards. 



X. Mobile finger or dactylus with a 

 prominent lobe or tooth at the 



distal extremity coarctatus M. E. 



xoi. Mobile finger without a promi- 

 nent tooth at the distal extremity. 

 /3. Lower finger with two only 



slightly promin. lobes or teeth, forcipatus (Ad. & 

 /3/3. Lower finger presenting but White) de^^Ian. 

 one single tooth. 

 y. Tooth of the lower finger 

 conical , a little before 



the middle Urvillei M. E. 



•yy. Tooth of the lower finger 

 broadly triangular, a little 

 beyond the middle. . . signatus Hess. 



IL Front between the eyes broad. 



A. Lower oblique crest of the inner sur- 

 face of the palm quite absent. Dactylus 

 (mobile finger) with a prominent 

 tooth at the distal extremity. . . inversus Hoffm. 



AA. Lower oblique crest more or less 

 distinct. Dactylus without a tooth 

 at the extremity. 



X. upper border of the palm mar- 

 gined by a slightly raised edge. 



?^otes from the Hieyden IVluseura , "Vol. XHI. 



