THE CANADIAN ENTOMOLOGIST. 117 



Differs from quercus in its relatively longer, in great part perfectly 

 straight, beak, longer pubescence, form of the prothorax and in other 

 characters ; from orthorhync/ius Chit , it may be known at once by its 

 very much larger size, being of three or four times the bulk. One of the 

 two specimens before me has the singular thread-like ovipositor, with its 

 biungulate clasping extremity, protruded as described by Dr. Horn (Proc. 

 Ann. Phil. Soc, XIII, p. 457). 

 ■\-\Beak very slender though slightly thicker basally ; anteium ( A^ ) inserted 



at or slightly beyond the middle ; pygidiuvi ( ^ ) not excavated. 



The following species have a narrow elongate fusiform outline, with 

 the prothorax less markedly narrower than the elytra than usual, and are 

 all much smaller and more slender than caryce Horn, which belongs to the 

 same section as defined above. 



B. auriger n. sp. — Moderately slender, convex, piceous-black to dark 

 testaceous, densely clothed with narrow pale golden scales, denser in two 

 pronotal vittse and having a bright lustre in the condensed subtransverse 

 elytral maculae, of which one, especially conspicuous, is generally well- 

 defined behind the middle, the darker areas clothed sparsely with dark 

 hair-like vestiture ; antennae {$) inserted at about the middle of the beak, 

 (?) at just behind basal third, the first funicular joint much longer than 

 the second; prothorax nearly as long as wide, parallel, moderately narrowed 

 apically, strongly, densely punctate ; scutellum small, with the elongate 

 central elevation solidly squamose; elytra about one-half longer than wide, 

 rather acuminate, the humeri broadly rounded and not prominent, the 

 striae moderately coarse and coarsely punctate, the intervals strongly, 

 rugosely punctate. Male with the third ventral at base much below 

 (viewed ventrally) the level of the second, — a very frequent character not 

 generally referred to, the fifth subconcavely flattened, sparsely clothed, the 

 apex broadly and feebly sinuate. Length, c?, 9,5.6-7.0 mm.; width, 

 2.5-3.0 mm ; length of rostrum, $, 3.0-3.4 mm.; 9, 6.0-8.0 mm. 

 Arizona. 



This species typifies a group, no one of which has as yet been 

 described, most of them having been referred to rectus Say. The strongly 

 arcuate beak in both sexes, becoming straight only in about basal half, 

 will however alone prevent them from coming under that designation; 

 the femora are strongly toothed beneath in the female but much more 

 feebly in the male. The following seems to be a subspecies of auriger : 



