152 AMERICAN COLEOPTERA. 



f . Beak one-fourth longer, more finely, sparsely punctulate ; tips of elytra 

 conjointly rounded ; tibise unarmed. 



Hab. — New Hampshire to Florida and westward to Wisconsin 

 and Texas. 



A common species throughout tlie eastern United States. It 

 occurs abundantly in New England on the wild indigo, Baptida 

 tiudoria, in the seeds of which it breeds. Our largest species with 

 the exception of umboniferum. 



67. A. coloradeuse n. sp. — Moderately elongate, wider behind, not very 

 convex, black, rather sparsely pubescent. Beak ( '^ ) a little longer than the 

 head and prothorax, tolerably strong, arcuate, nearly parallel, moderately dilated 

 at about one-third from the base, coarsely punctate ex(^ept at the tip, which is 

 more shining ; ( 9 ) decidedly longer, often exceeding half the length of the body. 

 First joint of the antennae barely as long as the next two, third reaching the 

 eye. P'ront with rows of punctures and a not very distinct median sulcus; eyes 

 not very prominent. Prothorax wider than long, widest a little before the base; 

 sides arcuate, rather feebly constricted in front, coarsely, densely punctate ; basal 

 fovea distinct. Elytra fully one-half longer than wide, widest behind the mid- 

 dle; humeri moderate; intervals flat, less than twice as wide as the strige. 

 Beneath coarsely, evenly, but not densely punctate; the third and fourth seg- 

 ments punctate, at least at the sides; legs moderate. Length 2-2.6 mm. ; .08-. 10 

 inch. 



% . .Siitural angles rounded ; middle and hind tihise, with a rather short mucro 

 which is sul)angulate beneath. 



9 . Sutural angles scarcely rounded ; tlbife unarmed. 



i/,ji.._Colorado (Colorado Springs 6000-7000 feet-Wickham). 



In .some examples the thorax is so feebly narrowed before the 

 base as to make its reference to the present group doubtful. It will 

 then be traced to " 6 " in the table, under which are found prodive, 

 cJiuparosie, grossnlum and pa.truele It is much less robust than 

 either of the last three named, and from proclive may be separated 

 by the longer, more arcuate beak in the male, and the shorter, less 

 strongly angulate tibial mucro. 



68. A. iiigrum Hbst. Moderately robust, not very convex, black, moder- 

 ately or sparsely pubescent. Beak ( '^ ) as long or a little longer that the thorax, 

 dilated, punctate, pubescent, slightly narrowed toward the tip; (9) longer, 

 glabrous, punctate, scarcely dilated, or narrowed toward the tip. First antenoal 

 joint subequal to the three following, second reaching the eye. Front not sul- 

 cate ; eyes prominent, Prothorax wider than long : sides rounded ; biisal and 

 apical constrictions well marked ; punctuation coarse, but rather superficial, and 

 with a tendency toward irregularity; base with an elongate fovea. Elytra one- 

 half longer than wide, widest slightly behind the middle; humeri less promi- 

 nent than in rostrum; strise deep; intervals usually feebly convex with fine 

 punctures subserially placed. Beneath strongly, moderately, closely punctured. 

 Length 2-2.4 mm.; .08-. 095 inch. 



