104 AMERICAN COLEOPTERA. 



Flagstaff, Arizona. (Dr. Fenyes.) 



The epistomal angles are evidently but not strongly tuber- 

 culate in much the same degree in the eight specimens before 

 me, all of which appear to be female by the structure of the 

 eighth ventral. This species is to be referred to the armatus 

 group of LeConte, and is apparently nearer to strenuus 

 {armatus Lee, not Say) than to any other of the group. In 

 strenuus the head is relatively narrower as compared with the 

 prothorax, the size distinctly larger, the color never as nearly 

 black, the legs, antennae and abdominal apex invariably paler. 



B. episcopalis n. sp. 



Black, elytra and legs bright rufous, the latter gradually narrowly 

 infuscate at base, front coxae darker. Antennae rufous basally, black- 

 ish outwardly, second joint distinctly longer and stouter than the third, 

 barely as long as the third and fourth together, penultimate joints 

 quite strongly transverse. Head very slightly narrower than the pro- 

 thorax, finely granulose and dull, with a few fine scattered punctures 

 and a rather strong impressed vertical tubercle ; epistomal suture arcu- 

 ate, distinctly impressed, anterior angles of epistoma tuberculate, 

 antennal prominences strong. Prothorax a little wider than long, 

 sides almost perfectly straight and parallel for three-fourths their 

 length, then rather suddenly convergent and feebly arcuate to base, 

 the base angles very obtuse and indistinct but traceable ; surface finely 

 granulato-reticulate and somewhat shining, median line well impressed, 

 punctures rather fine and sparse. Elytra just visibly wider at base 

 than the prothorax, scarcely as long as wide, about one-fifth longer 

 than the prothorax, sides moderately divergent, punctures more closely 

 placed than on the prothorax, being separated by about their own di- 

 ameters. Abdomen very remotely finely punctate above, less sparsely 

 so beneath. Prosternal sutures obliterated, the hypomera very little 

 narrowed in front, impressed along the side margin, coxal fissures 

 about as long as the adjacent width of the hypomera, apparently 

 closed or very nearly so when viewed from the side, narrowly open 

 when viewed from the front. Mentum concave, more deeply so basally, 

 shining, lightly reticulate. Length 3.6-4.3 mm. 



Bishop, California. (Dr. Fenyes.) 



A member of the armatus group, differing from the other 

 species of like size by the strongly tuberculate head in the male. 



B. gradatus n. sp. 



Black, prothorax reddish brown, elytra paler rufous, abdomen 

 rufescent at apex, legs bright rufous, antennae rufous at base, dusky 

 toward the apex. Antennae gradually incrassate, joints 6-10 increas- 



