AMERICAN COLEOPTERA. 217 



Body rhomboidal-oval, broadest at the anterior third of the elytra, gradually 

 and obliquely narrowed before and more regularly so behind, obtusely rounded 

 at each end, very convex above. Beak cylindrical, stout, curved, sonaewhat 

 shorter than the prothorax, separated from the head by a transverse impression ; 

 eyes flat, partially covered by the prothorax. Head convex; antennae stout, 

 club large, oval, pointed, annulated, entirely pubescent. Prothorax subcylin- 

 drical, rather longer than wide, sides rounded near the apex, front margin not 

 lobed, deeply transversely impressed on the sides with a row of six or seven 

 large fovem marking the impression. Scute! extremely small, punctiform. 

 Elytra connate, rounded at tip; pygidium exposed by protrusion only. Pro- 

 sternum deeply impressed transversely in front, rather narrow between the 

 front coxfe, which are somewhat prominent. Mesosternum not impressed; 

 side pieces large. Metasternum as long as the first ventral segment, side pieces 

 very narrow, not very distinct. Ventral segments, first and second closely 

 connate, as long as the other three united. Legs stout; tibiae thick, especially 

 the middle and hind pair, which are nearly conical and coarsely pubescent ; 

 all are truncate at tip, with a fixed spur at the inner side; tarsi short, joints 

 1 — 2 as broad as long, densely pubescent beneath, third larger, bilobed, fourth 

 slender, not clavate, as long as first and second united, with only a single rather 

 long claw. 



E. crassipes. — Rhomboidal-oval, elongate, black, without lustre, smooth, 

 ■with a few scattered punctures as indicated, and sparse whitish scales; beak 

 punctured ; prothorax with a few scattered small punctures and a row of large 

 fovese in the anterior lateral constriction. Elytra with striae indicated only by 

 rows of very distant large punctures. Beneath nearly smooth, pro- and meta- 

 sternum punctured and pubescent with coarse erect brown hairs; thighs sparsely, 

 tibiae more densely, coarsely punctured and pubescent. Length 5 mm. 



Two specimens have been received by Dr. Horn from Texas, one of 

 which he has generously placed in my collection. 



There are now four genera of Curculionidfe in our fauna remarkable 

 for having but a single claw, which do not otherwise resemble each 

 other in appearance or affinities, viz. : Brachj/bamus, Mononi/chus, 

 Eisonyx and Barilepton. 



MICROCHOlulTS Lee. 



M. erasns.— Oval, very convex, narrowed at each end, robust black, 

 somewhat shining, though not polished, smooth, beak slender, cylindrical 

 curved, longer than prothorax, sparsely punctured; head smooth, convex; 

 prothorax at base wider than long, gradually narrowed in front, constricted 

 near the tip; surface very sparsely and finely punctulate; elytra widest at the 

 anterior third, striae very fine, evanescent behind, deeper and excavated at 

 base, where there are a few white coarse hairs. Beneath sparsely punctulate 

 with a few brown hairs, thighs sparsely punctured, tibiae more densely punc- 

 tured. Length -i mm. 



Topeka, Kansas; Prof E. A. Popenoe, one specimen. The middle 

 and hind tibiae are rather stouter at tip than in the other three species, 

 from which it is abundantly distinct by the prothorax narrower than 

 the widest part of the elytra. 



TRANS. AMICK. EST. SOC. VIII. (28) JULY, 1880. 



