172 AMERICAN COLEOPTERA. 



Elytral pubescence obscurely mottled, without pale line on 

 third interspace ; antennae more slender, basal six joints 

 at least as long as wide. (California.) 



pauperculus Lee. 



5. Pubescence varied in color or irregular in distribution, legs black or 



piceous 6. 



Pubescence varied in color or distribution ; legs pale or bicolored..7. 

 Pubescence uniform in color and distribution ; legs pale or bi- 



colored 8. 



Pubescence uniform, legs black 9. 



6. Scutellum oblong, slightly emarginate at apex, moderately grayish 



pubescent ; pubescence cinereous varied with brownish- 

 ochreous, a pale line at middle of third interspace ; pygi- 

 dium of o" moderately convex. (California.) 



pullus n. sp. 

 Scutellum small, rounded, densely white pubescent; pubescence 

 finely mottled, whitish ; pygidium of cf very convex. (New 

 Jersey, Georgia, Missouri, Louisiana.) 



alboscutellatus Horn. 



7. Femoral denticles distinctly separated from the long tooth. 



Terminal joint of antennae black. 

 Antennae shorter, outer joints transverse, size small. 



Pubescence predominantly cinereous, mottled with brownish- 

 ochreous, all the femora in great part dark. (California.) 



pullus n. sp. 

 Pubescence predominantly ochreous, feebly mottled, legs pale 

 rufous except the base of the hind femora. (Utah.) 



mixtus Horn. 

 Antennas longer, outer joints not distinctly transverse, longer 



than wide in the cf, size larger inquisitus n. sp. 



Terminal joint of antennae pale. (United States.) 



obtectus Say. 

 Femoral denticles arising from the posterior side of the long tooth ; 

 form robust, antennae pale throughout or with the inter- 

 mediate joints a little darker. (Eastern United States.) 



bibisci Oliv. 



8. Prothorax with a subbasal lateral spot, and elytra with median 



vitta, reddish. (Arizona.) rufovittatus Schf. 



Upper surface entirely black. 

 Scutellum small, transverse ; antennas entirely pale ; eyes emar- 

 ginate only to middle (last two characters doubtful in 

 schrankice) . 

 All the femora black, size larger — 2.5 mm. (Missouri.) 



scbrankise Horn. 



Hind femora only black, size smaller— 1.6-1.8 mm. (Southern 



Arizona.) chiricahuae n. sp. 



