CANCROIDEA. 173 



SUBGKNDS EUXANTHUS. 



Xantho affinis. Articulus antennarum externarum primus orbitce fis- 

 suram ad summum implens, cavitate in ejus apicis latere antico articu- 

 lum proximum gerente. Margo antero-lateralis sub orbita antice~ pro- 

 ductus. 



Near Xantho. The first joint of the outer antennae quite filling the 

 orbital fissure, and a cavity in the anterior side of the apex bearing 

 the next joint. Antero-lateral margin continued forward beneath 

 the orbit. 



The orbital fissure occupied by the basal joint of the outer antennae 

 is quite filled with this joint, and the summit of the joint, instead of 

 giving insertion to the next joint from near its middle, has a cavity 

 in the anterior margin, from which the second joint of the antennae 

 proceeds, and in the two species observed, this second joint scarcely 

 projects above the outline of the cavity. In one species this cavity is 

 elongated towards the orbit, and is scarcely separated from it, while 

 in the other it is nearly circular, and is wholly separated from the 

 orbit. The hands are equal, and rather small. 



EUXANTHUS SCULPTILIS. 



Carapax antice" posticeque profundd areolatus, areold 2 M bipartitd ejus 

 partibus transversim subdivisis, totisque areolis plus minusve rugatis 

 aut incisis ; fronte inter-antennali bilobato, paulo prominente, mar- 

 gine orbitce sub antenna saliente; margine anterolaterali Q7-dentato, 

 dentibus sat crassis, pyramidicis, obtusis. Rdes antici cequi, carpo 

 a-assd nodoso, manu supra tubercidatd, extus costatd, d'ujito mobili 

 supra denticulate. Pedes postici mediocres, articulo tertio granuloso, 

 4to 5to supra rugatis aut tuberculosis, tarso villoso. Abdomen valde 

 areolatum. 



Carapax anteriorly and posteriorly profound areolate, areolet 2 M 



44 



