H. C. FALL. 115 



The humeri vary somewhat in jiroiuinence, and in many examples 

 the sutural stria is more strongly impressed. The trivial name is 

 misleading. There is indeed considerable variation in the depth and 

 approximation of the strial punctures in different species, but there 

 is no species in which they are not plainly visible. 



6. A. coracelliiiii n. s]). — Moderately slender, entirely black, more or less 

 bronzed; pubescence fine and very sjiarse. Beak ( 'J, ) a little sborter than the 

 head and prothorax, stouter in basal third, nearly parallel and slender beyond 

 the insertion of the antennte ; shining in apical two-fifths; a vague sulcus over 

 the antennfe; punctuation fine and sparse; ( 9 ) much longer, very slender, not 

 dilated, smoother. First antenna! joint as long as the next three, second about 

 reaching the eye. Front punctate and subcanaliculose ; eyes rather small, a little 

 more prominent in the male. Prothorax a little longer than wide, cylindrical; 

 sides slightly prominent at the middle; surface rather densely not coarsely punc- 

 tate; dorsal line nearly complete. Elytra of the usual form; humeri rather 

 small but prominent; posthumeral sinuation well marked: intervals flat. Beneath 

 rather densely, moderately, coarsely punctate; claws nearly simple. Length 

 1.6 nun. ; .065 inch. 



%. Sutural angles rounded; femoral tubercle not very prominent; smooth 

 area not striate ; limiting ridge moderate ; other characters as usual. 

 9 . Sutural tips very slightly prolonged. 



Hab. — District of Colundjia. 



Very few specimens seen, and all from one localitv. It super- 

 ficially resembles several others, and without especial care might 

 easily be confounded with specimens of texan.um and minufum, in 

 which the abdominal punctuation is closer than usual. Texanum is 

 always smaller and more slightly built, and miiiutmii has the elytra 

 noticeably shorter and more ventricose, while both have the pro- 

 thorax less densely punctate, and the anterior femora of the male 

 less prominently swollen. 



7. A. aiiceps n. sp. — Black, legs and antennae rufous; pubescence almost 

 wanting. Beak (9) subequal to the head and prothorax, slender, moderately 

 arcuate, not dilated, finely sculptured, scarcely punctate, tip smooth. First joint 

 of antennae about equal to the two following, third scarcely longer than the 

 fourth, second reaching the eye. Front with three rows of confluent punctures; 

 eyes prominent. Prothorax slightly wider than long, widest slightly behind the 

 middle; apical and basal constrictions evident : dorsal line nearly complete; punc- 

 tures large, rather shallow, not closely, rather unevenly distributed. Elytra nar- 

 row: humeri small but evident: striae shallow with widely-spaced punctures ; 

 intervals flat. Beneath coar.sely, nither closely punctate; claws with a small 

 tooth. Length 2 mm. ; .08 inch. 



Hub. — Illinois. 



Described from a single female sent by Mr. Blanchard, who 



TRANS. AM. ENT. SOC. XXV. OCTOBER, lb9b. 



