PACHYONYCHIS. 01 



insertion of the antenna? ; 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. Smtellum small, triangular. Elytra broader than the thorax, 

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

 with a very fine pale flavous pubescence. Antennas 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. 



Labrum transversum, breve. 



Palpi maxillares sat robusti, art. 2 nd0 et S ti0 ad apicem oblique 

 truncatis. 



Palpi labiales elongati, minuti. 



Antennae approximates, breves, ad apicem dilatator, art. 2 nd " hand 

 brevi, attenuato, art. 4 t0 quam 3 ttus longiori, reliquis dilatatis. 



Oculi magni, globosi, ad basin capitis positi. 



Caput breve, transversum, haud product am. 



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

 coarctatus, Icevis, glaber. 



Elytra lata, depressa, subparallela, marginata. 



Pedes sat robusti, tarsorum ant. art. basali lato, 2 nd0 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. 



Labi cd palpi (Tab. II. fig. In) elongate. 



* ira\vs, robustus ; iJvvE, unguis. 



