LeConte.] 



HYLURGINI. 375 



Head but slightly prolonged in front of the eyes, which are large trans- 

 verse, rather finely granulated, slightly emarginate at the insertion of the 

 antennai. Antennai inserted at the sides, scape long, slender, curved, 

 funicle o-jointed, first joint stouter, a little lo.iger than wide ; 2-5 slender, 

 closel}^ united, attached to the side of the club, which is very large and 

 strongly compressed, pubescent on both sides, not marked with sutures ; 

 the lower edge is nearly straight, the; upper is curved aud sinuate, and 

 each end is obtusely rounded. Ventral surface moderately convex, sutures 

 straight, well impressed, first aud second segments a little longer. Tibi* 

 dilated, finely serrate on the outer side and at the tip, which is broadly 

 rounded; apical spine at the inner angle short ; tarsi with joints 1-3 short, 

 fourth small, but distinct ; fifth as long as the others united, with large 

 simple divergent claws. 



Bristles long, scales of elytra sparse 1 . icoriae. 



Bristles short, scales dense 2. Chapuisii. 



1. C. icoriae Lee, Tr. Am. Ent. Soc. 1868, 168; Bhopalopleurm Le- 

 eontei Cliapuis, Mem. Soc. Roy. Sc. Liege, 1869. 



(^. Head deeply concave. 



9 . Head flattened, with a feeble curved impression. 



Middle and Western S:ates, in hickory twigs. The present is an excel- 

 lent example of the uncertainty of entomological descrip ions. In the 

 memoir above cited, I described the funicle as having but one distinct 

 joint, "the remaining joints are obsolete, and visible only as a corneous 

 ridge on the upper edge of the base of the club," which, in fac', was the 

 appearance presented by all the specimens in my cabinet. But on receiv- 

 ing the memoir of my friend, Dr. Chapuis, suspecting that I might have 

 made an error by neglecting to observe tlie antennae in all directions, I re- 

 laxed some specimens, and was greatly pleased to find that tl)e very extra- 

 ordinary character upon which he had founded RJiopalopleurus really 

 existed in my species. The other characters given in my detailed descrip- 

 tion above cited are, however, so characteristic, that the genus might have 

 been recognized, without reference to the antennal funicle; apart of the 

 body, which, as I have said above, I believe to be of but little valu3 in the 

 classification of these ins.'cts. Length 1..5 mm.; .06 inch. 



2. C Chapuisii n. sp. 



Oval, robust, convex, black, with the antennae testaceous, precisely as in 

 G. icorim, and differing from it only by the interspaces of tlie elytra being 

 densely clothed with small thick scales, and single rows of rather short 

 bristles, and by thj striae being narrower and finely crenulate, instead of 

 coarsely punctured. Length 1.5 mm. ; .06 inch. 



One ^Louisiana. Tlie front is triangularly flattened and marked with 

 a fine curved line, at the middle of whicii is a small transverse fovea. 



POLYG-RAPHUS Er. 

 In this genus the body is less robust, and of the usual cylindrical form, 

 narrowed in front, and rounded behind, as seen in Ilylesinut. The eyes 



