CARCINOLOGICAL STUDIES. 



17 



reticulatus by the different form of the hands, which are 

 less high in proportion to their length. 



Ozius rugulosus Stimps. differs by a less enlarged , more 

 convex cephalothorax , by the shorter fingers of the ante- 

 rior legs , etc. 



When we exclude EpLv. dentatus White , which is easily 

 recognized by the prominent antero-lateral teeth separated 

 from one another by deep incisions, the three other Indo- 

 pacific species oï Epixanthus may be distinguished as follows: 



distinctly granulated. 



Posterior half of the 

 upper surface of the 

 cephalothorax and < 

 outer surface of the 

 anterior legs 



corrosus. 





smooth; antero-lateral 

 regions , upper surface 

 of the wrist and upper 

 margin of the hands 



distinctly ^ 

 rugose, g 



smooth ^ 

 or only § 

 minutely S„ 

 granular. • 



The dimensions of the two specimens of Epix. subcorrosus 

 are the following : (ƒ 9 



Breadth of the cephalothorax. . 21 '/^ mm. 25 mm. 

 Length » » » . . I2V2 » 14^4 » 



Distance between the external 



orbital angles 10 1/3 » IP/3 » 



I add the measurements of the three specimens of 

 Epix. frontalis M. E. , mentioned above : 



cT cf 



Breadth of the cephalothorax 

 Length » » >^ 



Distance between the external 

 orbital angles .... 



30 mm. 202/. ^^^ 

 18 » 12'/I » 



15 



11 



9 



24V,, mm. 

 14'/; » 



12 '/^ » 



The upper surface of the cephalothorax 0? Epix. subcorrosus 

 seems to be ornamented with a few symmetrically arranged 

 small spots. 



J«Iotes from thie Leyclen INXuseuxxx, Vol. XHI. 



