120 AMERICAN (X)LEOPTERA. 



twice as lone: as wide; humeri wanting; strife rather deep; intervals flat or 

 slightly convex, about twice as wide as the strise. Beneath rather sparsely punc- 

 tate; claws simple. Length 2.2-2.4 mm.; .09-.10 inch. 



%. Femoral tubercle prominent; smooth area not or scarcely visibly striate ; 

 limiting ridge well marked ; other characiters as usual. 



9 • Sutural tips moderately produced. 



Hab. — Dakota, Nebraijka, Missouri, Michigan. 



Smith also gives Canada and California. The California speci- 

 mens were considered by him as identical with ovale, which is now 

 known to be the female of obsoletum ; they are, however, without 

 doubt, hesperum, females of which are scarcely distinguishable from 

 those of the present species, though the males are readily separated. 



15. A. elliptieiiin Smith. — Moderately elongate, entirely black; pubescence 

 sparse, but evident in well-preserved examples. Beak a little longer in the ? , 

 but shorter than the head and prothorax in both sexes; stout at the base, much 

 more slender, cylindrical, entirely polished and finely, sparsely punctulate beyond 

 the rather strong dilatation, which is present in both sexes. Antennae rather 

 stout; first joint scarcely as long as the next two, third and fourth equal, second 

 reaching the eye. Front wide, canaliculate; eyes rather large, prominent. Pro- 

 thorax nearly cylindrical, very slightly longer than wide; sides just visibly arcu- 

 ate at the middle; surface rather closely punctate; impressed line complete. 

 Elytra about twice as wide as the prothorax, two thirds longer than wide, a little 

 wider at the middle; humeri moderate: sides nearly parallel, feebly, evenly 

 arcuate; strise moderate, not strongly punctate; intervals flat, not more than 

 twice as wide as the striae on the disc. Beneath rather numerously but not very 

 closely punctate. Legs rather short and strong for this section ; claws nearly 

 simple. Length 1.7 mm. ; .07 inch. 



%, . Anterior femora merely swollen, compresso-carinate beneath without 

 well-defined groove and ridge; smooth area with coarse, rather distant strise; 

 tibial armature more strongly developed than is usual in this section ; other 

 characters as usual. 



9 . Elytral tips slightly prolonged. 



Hab. — Louisana, Nebraska, Texas. 



The rostral and sexual characters abundantly distinguish this 

 species from any other in our fauna. 



16. A, desolatum Smith. — Elongate, black ; legs rufous, indistinctly pu- 

 bescent. Beak ( %, ) rather stout, shorter than the head and .prothorax, nearly 

 cylindrical, moderately dilated, only slightly more slender beyond the dilatation, 

 strigose almost to the apex ; punctuation sparse but evident; ( 9 ) longer, slender, 

 strongly arcuate, smoother and more shining. First joint of antennae suliequal 

 to the next two, second reaching the eye. Front longitudinally rugulose or cana- 

 liculate; eyes moderately prominent. Prothorax cylindrical, a little longer than 

 wide; sides slightly arcuately prominent at the middle; surface rather sparsely, 

 finely punctate; dorsal line feebly impressed, somewhat variable, not complete. 

 Elytra ovate: humeri wanting; striae rather deep; intervals convex. Beneath 

 sparsely, finely punctate: legs not slender; claws nearly simple. I^ength 1.6 mm.; 

 .06 inch. (PL II. fig. 8). 



