be. NATURAL History BULLETIN. 
longer. The sides in the female are nearly straight, arcuate 
near the tip; in the male more evenly arcuate from the shoul- 
ders. Disk regularly punctulate, shoulders spinous, discal 
lines abbreviated in the anterior third. Addomen longer than 
the elytra, the basal segment three times as wide as long and 
as wide behind as the elytra; basal carine very short, one- 
fifth of the segmental width apart; the fourth segment is 
longer than its neighbors, the ventrals sub-equal, the first 
longer. Legs long, tibia flat and angular inside, gradually 
stronger towards the distal end, and more densely pubes- 
cent. 4, intermediate thighs emarginate above near the tip, 
anterior tibia twisted near the knee joint and with a very 
small spine, dilated and compressed in the middle. The upper 
half of the dilatation is emarginate, so as to form a large, 
strong, blunt spine; the distal end is again twisted. 9, thighs 
simple, the eyes very small, situated far down on the sides of 
the head near the antennal fovez, not rounded, rather irregu- 
lar, with a spinous attachment posteriorly, which is in some 
specimens very small, in others quite conspicuous. Varies in 
the sculpture of the head and in the interval between the pro- 
thoracic carinze being sometimes less smooth. 
Habitat. Northern States east of the Mississippi. 
B. monstrosus, Lec. This species differs from B. ferox, 
according to the description, by the antenna having the last 
joint longer; from &. armzger it differs in the broader and 
shorter tooth of the anterior tibia. The description is not 
sufficient for a diagnosis, even if it be not a variety of ferox. 
Unknown to us. 
B. conrinis, Lec. The brief description is as follows:— 
Rufus, capite levi, vertice elevato, I-cristato, sulco circum- 
cincto; thorace obsolete lineato, antennis gracilibus, articulo 
ultimo ovato. Thoracis spinis sub-basalibus, minoribus 
differt. 
Unknown to us. 
