,^0f Mr. KiRBV's Ceiititir/ of Iiisec/.s^ 



Palpi maxillares filiformes, quadriarticulati : articulo extimo com- 



presso, oblongo. 

 labiates triarticulati : articulo extimo magno, petlolato, se- 



curifornii. 

 Antenna: serrata?. 



Thorax teretiusculus, postice valde constrictus. 

 Corpus convex um. 



LatreiMe's character of Tillus in Cuvier's Begne Animal *, " ou 

 la majeure partie des antennes est en forme de scie, et oh Fes 

 tarses, vus sur les deux faces, ont cinque articles trfes-apparens," 

 would include the four genera I have here defined. But the other 

 characters exhibited by them, both as to their habit and general 

 form, and their oral instruments, are so different, that every ento- 

 moloo-ist who at all adopts that learned author's system would 

 consider them as good genera. Thus in Eurypus and Tillus the 

 labrum is entire, while in Axina and Priocera it is emarginate. 

 Again, the labium in Tillus is entire, but in the three other genera 

 bifid. In Eurypus and Axina all the palpi terminate in a securi- 

 form joint ; in Tillus and Priocera, only the labial ones. In Eury- 

 pus and Priocera the maxillary palpi consist of four joints; in 

 Tillus and Axina, only of three. In Eurypus, Tillus, and Axina 

 the labial palpi are biarticulate, but in Priocera they are triarti- 

 culate. In Eurypus the thorax is square; in Tillus and Axina,^ 

 cylindrical; and in Priocera, constricted behind. 



rubens. 20. E. 



Eurypus. 



Plate XXI. Fig. 5. 

 Long. corp. lin. 6'. 



Habitat in Brasilia. D. Hancock. 



* iii. 2a4. 



Corpus 



