AMERICAN COLEOPTERA. 171 



10. H. hystrix Lee. Proc. Acad. Nat. Sci. Phila. 1858, 81. 

 San Die<:;o, California. This and the three preceding species have 

 the third joint of the tarsi less dilated than in those of division A, 

 and rather eiuarginate than bilobed. They approach in this character 

 and in the funiculus of the antennae the genus IT/ylurgus, but differ by 

 the larger club, the finely toothed tibiae and the form of the body. 



CNESINUS Lee. (n. g.) 

 Elongate cylindrical, head convex, beak very short, eyes oblique, 

 transverse, broadly emarginated, finely granulated ; antennae with the 

 scape as long as the funiculus, much curved, slender at base, mode- 

 rately thickened towards the tip; first joint of the funiculus thick, 

 as broad as long, remaining joints forming an elongate mass, gradually 

 becoming wider externally, showing under a high magnifying power 

 the appearance of six closely connected joints; club elongate oval, 

 somewhat shining except at tip, feebly pubescent, transversely annulate, 

 the sutures furnished with fringes of long hairs; prothorax longitudi- 

 nally aciculate; elytra deeply striate, convex at tip, basal edge acute and 

 serrate ; front tibiae dilated, armed externally near the tip, which is 

 prolonged, with large acute teeth ; middle and hind tibiae dilated, feebly 

 serrate; tarsi with the joints 1 — 3 moderately dilated, 3d emarginate, 

 4th slender, as long as the two preceding united; 1st joint of front 

 tarsi shorter than the 2d, of the middle and hind tarsi equal to it. 



The anterior coxae are large and prominent, widely separated ; the 

 mesosternum is protuberant. 



A peculiar genus, diifering in appearance from the others of the 

 tribe by the more cylindrical form, the prothorax being parallel on the 

 sides, except near the apex, where they are rounded. The sculpture 

 of the prothorax is also unusual, being composed of dense longitudinal 

 aciculations. 



C. strigicoUis.— Cylindrical, dark brown, clothed with yellowish hairs, which 

 are more stiff and arranged in rows upon the elytra; front flattened, nearly 

 smooth, with a fringe of yellow hairs; prothorax longer than wide, convex, 

 sides parallel to near the tip, where they are rounded, tip two-thirds as wide 

 as the base; disc uniformly and densely covered with short longitudinal acicu- 

 late punctures; elytra with deep punctured striae, intervals flat, with very fine 

 rugosities; tip obliquely declivous, and broadly sulcate along the suture. 

 Long, nearly 3 mm. 



Two specimens, Illinois. 



