12 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. Abdomen longer than 

 the elytra, the basal segment three times as wide as long and . 

 as wide behind as the elytra ; basal carinas 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, tibise fiat and angular inside, gradually 

 stronger towards the distal end, and more densely pubes- 

 cent. 5, intermediate thighs emarginate above near the tip, 

 anterior tibiae 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. ?, thighs 

 simple, the eyes very small, situated far down on the sides of 

 the head near the antennal foveae, 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 carinee being sometimes less smooth. 

 Habitat. Northern States east of the Mississippi. 



B. monstrosus, I^ec. This species differs from B. ferox, 

 according to the description, by the antenna having the last 

 joint longer; from B. armiger it differs in the broader and 

 shorter tooth of the anterior tibiae. The description is not 

 sufficient for a diagnosis, even if it be not a variety oi ferox. 



Unknown to us. 



B. CONFIMS, Lee. The brief description is as follows: — 

 Rufus, capite lasvi, vertice elevato, i-cristato, sulco circum- 

 cincto; thorace obsolete lineato, antennis gracilibus, articulo 

 ultimo ovato. Thoracis spinis sub-basahbus, minoribus 

 differt. 



Unknown to us. 



