H. C. FALL. 113 



to 3.3 mm. in the seven specimens at hand. The head and 

 prothorax are densely granulato-reticulate, but more finely 

 so and less dull than in ruHcornis ; the elytra piceous, be- 

 coming narrowly and rather abruptly yellowish-brown at 

 apex. The outer joints of the antennae are more strongly 

 transverse, the tenth very nearly twice as wide as long. 



California, Pasadena (type); Cole. Siskiyou County (Dr. 

 Fenyes). 



Adustus Csy., from Colorado, must be much like the pres- 

 ent series, but according to description is more lightly and 

 sparsely punctate. 



B. medialis n. sp. 



Black, elytra yellow with a broad fuscous sutural stripe; abdomen 

 black above, rufopiceous beneath, legs yellow. Antennas brown, paler 

 at base, second joint slightly thicker than and barely as long as the 

 next two, tenth two-thirds wider than long, eleventh nearly as long as 

 the two preceding. Head and prothorax finely granulate and feebly 

 shining, elytra and abdomen shining, the latter very feebly reticulate. 

 Head evenly convex, epistomal suture very fine, not impressed, sur- 

 face with a few scattered indistinct punctures and a small punctiform 

 occipital fovea. Prothorax slightly wider than the head and a little 

 wider than long, sides feebly arcuate, subparallel or a little divergent 

 from the apex to the middle, then rounded, convergent and a littie 

 sinuate to base angles, the latter obtuse but well defined ; front angles 

 very narrowly rounded and nearly rectangular ; median impressed line 

 fine, entire; punctuation fine and rather sparse. Elytra a little wider 

 at base than the prothorax, about as long as wide, very slightly wider 

 apically, rather closely and moderately strongly punctate. Abdomen 

 very finely and remotely punctate above, less sparsely so beneath. 

 Hypomera nearly flat, very feebly depressed, parallel scarcely more 

 than one-half as wide as their distance from the coxae ; prosternal 

 sutures represented by a fine but prominent raised line ; coxal fissures 

 open. Mentum broadly concave, with or without a deeper rounded 

 median impression. Length 3.1-3.4 mm. 



Vancouver Island. Three examples. 



Most nearly allied to suturalis, in which, according to de- 

 scription the mentum is flat and the prothoracic epistoma 

 concave. These differences are slight probably and may be 

 entirely due to slight individual variations, or to lack of 

 precise description. I have, however, compared with the 

 type of suturalis, and judged the present species distinct, 

 but find no notes as to the differential characters. 



TRANS. AM. ENT. SOC, XXXVI. (15) JUNE, 1910. 



