3 12 



REVISION OF THE TENEBRIONIDiE OF AMERICA, 



the eyes is a deep groove, extending from the anterior margin, of the eyes backward, then 

 down upofl the side of the head at some distance behind the (-yes, losing itself gradually 

 as it approaches the gula. The antenna? are rather long, equalling the head and thorax. 

 The outer joints are sub-quadrate, not transverse nor sub-perfoliate, the terminal joint be- 

 ing longer than the preceding and obtuse at tip, as in Polypleurus. The epipleura? are 

 entire. 



The appearance of this insect is that of Helops, especially in the form of the head. 



G. cribratus, Lee, Proc. Acad. IX, p. 75. 



Black, moderately shining. Thorax broader than long, sides rounded in front, very 

 feebly narrowed behind, hind angles rectangular, base feebly Insinuate. Elytra twice 

 longer than broad, sub-parallel, moderately convex, with eight rows of rather large punc- 

 tures feebly impressed. The body is winged. 



Length .58 inch. 



Rare in Texas. 



Another species is in the Zimmerman cabinet, from Guinea. 



IUnXANDRUS, Lee. 

 Rhiiiandrus, Lee., New Species, p. 110. 



The differences between this genus and Zophobas are slight, and a study of the Mexi- 

 can species may render it probable that these points may have merely specific value. 



K. gracilis, Lee, New Species, p. 120. 



Length .12-75 inch. 



From Cape St. Lucas, Lower California. 



CENTRONOPUS, Holier. 



Centronopus, Sol., Battdi c Traqui Studi Entom., p. 258. 



The antenna- of this genus are longer than the head and thorax, the outer joints tri- 

 angular, the last oval and pointed. The epipleura do not reach the apex of the elytra. 

 The anterior tarsi of the males are feebly dilated or thickened. The anterior tibia.' of the 

 same sex arc armed near the middle with a short tooth, and the tips of these and the 

 middle tibiae are thickened. The metasternum is long and the body winged. Mentum 

 small, rhomboidal, narrower behind, middle prominent, angles acute. The anterior mar- 

 gin of front is thickened and slightly rcflexed. 



C. calcaratus, Fab., (Ilclopa) Syst, El. 1, 159. coracinut, Knoeli, (Tenebrio) Beitr., 172; reflema, Say, 

 (Teneb.) Journ. Acad. V., p. 103. 



This rather abundant insect may be known by the peculiar thickening of the anterior 

 margin of the front, as well as by the sexual characters of the male. The thorax is some- 



