92 



FIFTH REPORT OF THE ENTOMOLOGICAL COMMISSION. 



Fig. 34. — Bogtrichus bicornis. — 

 Smith del. 



Fig. 33.— Tragidion fulvlpenne.— Smith and Marx del 



35. Bostrichus bicornis Weber. 

 Order Coleoptera ; Family Ptinid^. 



Mr. A, S. McBride records finding this beetle under the dead bark of 

 white oak posts iu August, and he thinks the larva bores in the wood. 

 (Can. Ent., xii, 107, June, 1880.) 



Beetle. — Body blackish-brown varied with cine- 

 reous; with robust, scale-like hairs; head equal; 

 eyes prominent, reddish brown ; antennae and palpi 

 ferruginous; labrura fulvous; thorax declivous 

 before and behind ; auterior half and lateral mar- 

 gin armed with numerous short spines ; anterior 

 angles projected over the head in the form of par- 

 allel horns ; posterior angles elongated backward 

 in the form of tubercles ; two hardly elevated tuber- 

 cles on the middle of the base ; scutel rounded, 

 cinereous ; elytra, each with two elevated lines, of 

 which the inner one is the more prominent and acute, with the blackish-brown and 

 cinereous colors somewhat alternate ; tip near the sutural termination mucronate or 

 only angulated ; beueath dark reddish-brown. 



Length, two-fifths of an inch. (Say.) 



36. Xylehorua celsua Eichhoff. 

 Order Coleoptera ; Family Scolytid^. 



This species belongs to that section of the genus, according to Le 

 Conte, in which the body is elongate, cylindrical; the declivity of the 

 elytra oblique, frequently retuse or excavated ; the funicle of the antenme 

 with five distinct joints; tibiae rounded at tip and usually finely serrate. 



Beetle. — Two lines long. Ferruginous, clothed with yellow hair ; elytra obliquely 

 sloping behind, perfectly flat, smooth, with two larger acute, pointed, tubercles each 

 side near the suture, and near the edge of the declivity, with many smaller acute ele- 

 vations. It differs from X.pyri by its much more elongate form, the prothorax being 

 about one-half longer than wide, with the sides parallel behind the middle and the 

 elytra much more than one-half longer than the thorax. (Le Conte.) 



