PACHYONYCHIS. 



61 



insertion of the antennae; immediately above the base of the an- 

 tennae are two oblong tubercles, situated obliquely in the direction 

 of the inner surface of the eyes ; the surface finely granulated ; eyes 

 large and prominent. Thorax elongate, narrow, the anterior angles 

 depressed and subacute; the sides subdepressed, marginate, and 

 produced antemedially into a distinct tooth ; the base broadly and 

 transversely depressed ; the antemedial centre of the disc is (when 

 viewed from the front) slightly elevated into two obsolete and gla- 

 brous tubercles, the rest of the surface coarsely and unevenly punc- 

 tate. Scutellum small, triangular. Elytra broader than the thorax, 

 elongate, parallel, finely punctate-striate, and clothed throughout 

 with a very fine pale flavous pubescence. Antenna; robust, filiform, 

 black. Legs robust, black, the base of the femora and also of the 

 posterior tarsi of a lurid yellow colour. 



Brazil. In the collection of M. Chevrolat. 



Genus 7. PACHYONYCHIS*. (Tab. II. fig. 7.) 

 Dej. Cat. p. 408, ed. 3, 1837. 



Labrttm transversum, breve. 



Palpi maxillab.es sat robusti, art. 2 nd0 et 3"° ad apicem oblique 



truncatis. 

 Palpi labiales elongati, minuti. 

 Antenna approximata?, breves, ad apicem dilatatce, art. 2 nd " hand 



brevi, attenuato, art. 4'" quam 3 tiue longiori, reliquis dilatatis. 



Octjli magni, globosi, ad basin capitis positi. 

 Caput breve, transversum, liaud productum. 



Thorax transversus (subquadratus), antice constrictus, et ad latera 

 coarctatus, la?vis, glaber. 



Elttra lata, depressa, subparallela, marginata. 



Pedes sat robusti, tarsorum ant. art. basali lato, 2 nd " minuto ; tibiis 

 posticis brevibus, apicem versus rohustis et oblique truncatis, ad 

 ipsum apicem calcaratis. 



Labrum short, transverse. 



Maxillary palpi (Tab. II. fig. 7 m) tolerably robust, apparently 

 slightly geniculated ; the second and third joints subparallel, some- 

 what thickened towards the apex, and obliquely truncate ; the api- 

 cal joint narrower and conical. 



Labial palpi (Tab. II. fig. In) elongate. 



* Traxvs, robustua ; ovvf,, unguis. 



