H. C. FALL. 119 



sides feebly, aiTuately, promi7ient at tlie middle; surface sparsely, finely punctate; 

 impressed line not complete. Elytra very narrow, twice as long as wide ; humeri 

 small but evident; sides diverging very feebly to behind the middle; strife 

 moderately fine, obsoletely i)unctate ; intervals flat. Punctuation beneath, ex- 

 ceedingly fine and sparse. Length 2 nun. ; .08 inch. 



%. Sutural angles somewhat rounded; femoral tubercle prominent; smooth 

 area rather strongly striate inferiorly; limiting ridge feeble; tibial armature 

 minute: other characters as usual. 



9 . Not seen. 



Hab. -Florida (Capron). 



The unique type is a male in the National Museum collection. It 

 is nearest de^olatum in general appearance, but differs by the evident 

 humeri and stronger, striate, femoral tubercle. The unusually stout 

 beak for this section, and the very narrow elytra, which are widest 

 behind the middle, should make this species easily recognizable. 

 Specimens will probably occur with the legs entirely piceous or 

 black. 



13. A. robustuin Smith. — Similar in form to melnnarimn, or a little stouter; 

 entirely black, not very shini)ig and not at all metallic; pubescence fine and 

 sparse. Beak ( "J, ) as long as the head and prothorax, moderately dilated, finely 

 sculptured, except at tip, obviously jtunc^tate ; ( 9 ) longer, more slender and more 

 strongly curved not dilated. First antennal joint equal to the two { % ), or three 

 ( 9 ) following, third joint reaching the eye. Front canaliculose; eyes moderate. 

 Prothorax of the usual shape; punctuation moderately fine and close; impressed 

 line nearly complete. Elytra widest at the middle; humeri well developed; striae 

 rather fine; intervals about three times as wide as the striaj upon the disc. 

 Beneath sparsely, finely punctate. Length 2.5 mm. ; .10 inch. 



■J, . Femoral tubercle prominent; lateral surface flat, obscurely striate: infe- 

 rior surface nearly flat and meeting the lateral surface at an angle, limiting ridge 

 entirely wanting; other characters as usual. 



9. Sutural angles not rounded, tips of elytra conjointly produced. 



Hab. — Missouri, Texas, Iowa, Illinois, JVIichigan (Smith). 



A specimen in the National Museum collection is labelled Mass. 

 The c(M-rectness of the label may be doubted. The female was 

 originally described by Smith under the name obesum, but was 

 subsequently (Ent. Am. Ill, p. 56) properly referred by him. 



14. A. obsoletuni Smith. — Elongate, entirely black, or with the legs 

 brownish, not very shining and without metallic lustre; pubescence vei-y incon- 

 spicuous. Beak ( "J, ) as long as the head and prothorax. moderately slender, not 

 strongly arcuate, quite abruptly dilated; surface dull, except toward the tip; 

 punctuation sparse ; ( 9 ) longe'" and a little more slender, not dilated. Front 

 more or less canaliculate; eyes rather small, not very prominent. Prothorax 

 longer than wide; sides very feebly diverging, slightly prominent at the middle, 

 punctuation rather close; impressed line complete. Elytra elongate oval, nearly 



TKANS. AM. ENT. SOC. XXV. OCTOBER. 1898. 



