H. C. FALL. 151 



% . Beak as long or a little longer than the prothorax, moderately dilated ; 

 sutural tips of elytra rounded ; middle and bind tibiiTe armed with a mucro which 

 bears a minute denticle beneath near the tip. 



9. Beak longer, more finely punctured, feebly dilated ; sutural tips of elytra 

 not rounded ; tibije unarmed. 



Hab. — Pennsylvania, District of Columbia, Massachusetts, Ohio, 

 Virginia, Kentucky, Texas. 



Easily known by the large size, robust form, sparse pubescence 

 and strongly convex intervals. It seems rather rare in New Eng- 

 land, but is more common from District of Columbia westward to 

 Kentucky. 



65. A. cciitrale n. sp. — Very robust, black, sparsely pubescent. Beak { % ) 

 stout, about as long as the head and prothorax, strongly dilated, somewhat attenu- 

 ate, finely sculptured throughout, feebly shining, roughly punctate about the 

 insertion of the antennse, more finely above and apically ; (9 ) a little longer, 

 very finely, sparsely punctulate beyond the insertion of the antennae. Antennse 

 rather stout, first joint subequal to the two following, second reaching the eye; 

 eyes prominent. Prothorax wider than long, widest at or a little behind the 

 middle; apex constricted, narrowed more or less plainly before the base ; punctua- 

 tion coarse and close but not crowded ; basal fovea strong. Elytra obese, scarcely 

 one-half longer than wide; humeri prominent; sides feebly arcuate in basal 

 half, widest a little behind the middle; intervals twice as wide as the strise, 

 nearly flat or moderately convex. Beneath very coarsely punctured ; legs strong, 

 claws with a moderate tooth. Length 2.1-2.4 mm. ; .08-. 095 inch. 



% . Sutural angles broadly rounded ; middle and hind tibiae with a very short 

 mucro which is subangulate beneath. 



9. Sutural angles not rounded ; tibiae unarmed. 



Hab. — Colorado, Montana, Hudson Bay Territory, British Co- 

 lumbia, 



This species has been heretofore confounded with rodrum, to 

 which it is closely related, but sufficiently distinct by its smaller 

 size, stouter body, heavier beak, more coarsely punctate abdomen, 

 more convex intervals and short tibial mucro. 



66. A. rostrum Say. — Robust, not very convex, black, sparsely ]iubescent. 

 Beak moderately stout, feebly tajiering, finely sculptured throughout, dilated, 

 with a conspicuous puncture over the insertion of the antennae. First joint of 

 antennae not reaching the eye, as long as the ne.xt two. Front sulcate ; eyes 

 prominent. Prothorax wider than long; sides strongly rounded, narrowed 

 before the base, coarsely, closely punctate, foveate at base. Elytra about one-half 

 longer than wide; humeri strong; sides nearly parallel; intervals wide, flat, 

 each with a single, more or less regular row of shallow punctures. Beneath 

 closely, strongly punctured ; legs moderate; tarsi stout, the second joint as wide 

 as long, and not longer than the lobes of the third joint : claws strongly toothed. 

 Length 2.5-3 mm. ; .10-.12 inch. 



% . Beak as long as the prothorax ; tips of elytra separately rounded ; middle 

 and hind tibiae with dentellate mucro. 



TKANS. AM. ENT. SOC. XXV. OCTOBEK, 1898. 



