92 
FIFTH REPORT OF THE ENTOMOLOGICAL COMMISSION. 
Fig. 33.— Tragidion ml vipenne.— Smith and Marx del. 
35. Bo8trichu8 bicornw Weber. 
Order Coleoptera ; Family Ptinid^e. 
Mr. A. S. McBride records finding this beetle under the dead bark of 
white oak posts in 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 ; antenna? and palpi 
ferruginous; labrum fulvous; thorax declivous 
before and behind ; anterior 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 ; beneath dark reddish-brown. 
Length, two-fifths of an inch. (Say.) 
Fig. 34. — Bostrichus bicomis. 
Smith del. 
36. Xyleborw cehus Eichhoff. 
Order Coleoptera; Family Scolytid.e. 
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 antennae 
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.) 
