THE CANADIAN ENTOMOLOGIST. 119 



the second and third segments very large. This species may be dis- 

 tinguished from any other of the eastern forms of this group by its shorter 

 and relatively stouter form. 



B. acuminatus n. sp. — General form, sculpture and vestiture nearly 

 as ill attriger but larger and rather more elongate, black, the elytra, legs 

 and beak but little paler ; beak ( 9 ) much longer, similarly strongly 

 ^arcuate, becoming straight in about basal half, the antennae inserted at 

 basal fourth, the first funicular joint longer than in auriger, fully as long 

 as the next two combined ; prothorax more elongate, apparently a little 

 longer than wide, slightly but very gradually narrowed anteriorly, closely, 

 strongly and deeply but not confluently punctate, the smooth median line 

 narrow ; scutellum similar ; elytra with the humeri more prominent and 

 the sides thence more rapidly converging and very feebly arcuate to the 

 rather more acuminate tip, similarly punctato-striate but with the broad 

 intervals much more finely, sparsely and less rugosely punctate, the 

 condensed subtransverse maculte of pale tawny scales having the metallic 

 glint of auriger much less evident ; fifth ventral more obtuse and more 

 concave than in the female of that form. Length, 9, 7-5 nim. ; width, 

 3.2 ram.; length of rostrum, $, 9.8 mm. 



A single female probably taken in Arizona or Colorado, readily 

 distinguishable from auriger by its much longer beak, more elongate 

 prothorax and different fifth ventral of the female. 



B. setosiconiis n. sp. — Form and vestiture nearly as in auriger though 

 slightly less elongate, black or blackish in colour, the beak a little paler, 

 arcuate as in that species, the antenucie ( $ ) inserted at the middle, ( 9 ) at 

 or slightly behind basal fourth, slender, similar in structure, the bristling 

 black setae at the apical part of the funicular joints unusually conspicuous ; 

 prothorax nearly as long as wide, gradually narrowed anteriorly from 

 slightly behind the middle ( $ ), or more prominently rounded at the sides 

 and narrowed from before the middle ( c^ ), closely, deeply punctured but 

 much less coarsely than in auriger, the smooth median line very narrow ; 

 scutellum similar ; elytra nearly similar in form, sculpture and vestiture. 

 Length, (^ , ? , 6.2-6.5 mm.; width, 2.6 mm.; length of rostrum, (^,30 

 mm.; 9,7.0 mm. West Virginia. 



The fifth ventral in the male is flattened medially, subglabrous 

 posteriorly, where there is, on each side of the apex, a dense tuft of hairs, 

 the two patches nearly contiguous medially ; in the female the fifth ventral 



