H. C. FALL. 105 



ingly transverse, 2-3 subequal and full}- twice as long as wide, each 

 nearly equal to 4-5 together. Eyes very convex. Head not as wide 

 as the prothorax, finely granulato-reticulate and feebly shining, vertex 

 with a prominent divided tubercle, exterior to which are a few punc- 

 tures ; anterior angles of epistoma strongly tuberculate in the male, 

 epistomal suture strong, arcuate. Prothorax barely one-fifth wider than 

 long, sides parallel and nearly straight for three-fourths their length, 

 then strongly arcuately convergent and rounded into the base, the hind 

 angles undefined, the front angles narrowly rounded ; surface shining, 

 finely granulato-reticulate and rather coarsely punctate, the punctures 

 separated by from one to one and one-half times their own diameters ; 

 median line sharply impressed throughout. Elytra at base equal in 

 width to the prothorax, as wide at apex as the sutural length, sides 

 straight and a little divergent behind, surface moderately shining, as 

 coarsely but slightly less densely punctate than the prothorax. Abdo- 

 men slightly narrower than the elytra at base, slightly increasing 

 in width apically, above finely reticulate, moderately shining, very 

 sparsely feebly punctate ; beneath numerously rather finely punctate, 

 the interspaces very finely punctulate rather than reticulate. Hypo- 

 mera flat, a little narrowed anteriorly, coxal fissures narrowly open, 

 prosternal sutures obliterated but traceable. Length, 5.2-5.5 mm. ; 

 width, 1.2-1.35 mm. 



California. Desert region near Keeler, collected by Dr. 

 Fenyes. 



This species seems closely related to eximius Csy., in 

 which, however, the vertex is not evidently tuberculate, the 

 color and some other details somewhat different. It re- 

 sembles Uavipennis Lee. also, but the latter has the pro- 

 thorax very lightly punctate, the median impressed line 

 feeble. 



B. consimilis n. sp. 



Head and abdomen black, prothorax rufo-piceous, elytra yellowish 

 with the suture and base narrowly dusky, legs and antennae flavo- 

 testaceous. Head and prothorax finely granulato-reticulate, and feebly 

 shining, elytra distinctly finely reticulate, moderately shining, abdo- 

 men reticulate, moderately shining. Second antennal joint evidentlv 

 stouter and a little longer than the third, but much shorter than the 

 next two together ; tenth joint about one-half wider than long. Head 

 (o 71 ) impunctate with a small but distinct impressed vertical tubercle 

 antennal prominences strong, epistomal angles strongly but finely 

 tuberculate, epistomal suture strongly impressed. Prothorax slightly 

 wider than the head, a little wider than long, sides parallel and very 

 broadly arcuate for three-fourths their length then arcuately narrowed 



TRANS. AM. KNT. SOC, XXXVI. (14) MAY, 1910. 



