Horn.] 546 {April 19, 
pubescent. The anterior and middle tibie are feebly serrate, the posterior 
simple. Length .28-.48 inch ; 7-12 mm. 
The male has an acute sub-suturalspine at the apex of each elytron, in the 
female the suture is merely slightiy separated. 
This species is so well known and common as hardly to need description, 
it is widely diffused over our country, but especially common in the South- 
ern States. 
B. armiger Lec. New Species, 1866, p. 100. 
Elytra with trace of inner costa at base, coarsely cribrately punctured, 
the intervals tuberculate especially near the suture, surface clothed with 
yellowish hairs arranged in irregularly placed patches. Length .380-.40 
inch ; 7.5-16 mm. 
The sexual characters are as in dbicornis, from which it differs in the ab- 
sence of entire coste, the tuberculate elytra and the vestiture being hairy 
and not scaly. Tibise as in bicornis, 
Occurs in the Middle and Western States. 
B. trunmcaticollis Lec. New Species, 1866, p. 101. 
Piceous, sub-opaque. Thorax slightly longer than wide, apex (seen 
from above) truncate, without anterior processes, the anterior angles 
slightly prominent laterally, surface in front tuberculate, posteriorly granu- 
late and sparsely pubescent, angles moderately prominent. Elytra not 
costate nor tuberculate, surface cribrately punctured and clothed with yel- 
lowish hairs arranged in irregular patches. Body beneath moderately 
densely punctulate and sparsely pubescent. Length .30-.40 inch ; 7.5-10 
mm. 
The male has a short sub-sutural spine, the female has the sutural angle 
slightly obliquely truncate. Tibize as in dicornis. 
Occurs from Canada southward. 
B. califormicus, n. sp. 
Black, sub-opaque, surface with very sparsely placed short hairs. Head 
granulate. Thorax emarginate in front and on each side serrate, surface 
rather coarsely tuberculate, median line distinctly impressed, hind angles 
rectangular, prominent. Elytra not costate, densely and coarsely cribrately 
punctured, the intervals elevated and moderately shining but not forming 
tubercles, surface very sparsely pubescent. Body beneath finely scabrous, 
sparsely pubescent. The anterior tibi are feebly serrate, the middle and 
posterior simple. Length .40 inch ; 10 mm. 
The female has the sutural angle obtuse. Male unknown. 
From its black color and the almost entire absence of pubescence, this 
species has quite a different appearance from the others. 
One specimen ; San Joaquin Valley, California ; from Mr. Jas. Behrens. 
AMPHICERUS Lec. 
The differences between this genus and the preceding are very feeble, 
and will probably entirely disappear by the increase of species in the two 
