NORTH AMERICAN COLEOPTERA. 191 



B. — Tips of elytrii rounded, the sutural angle not 2)rolonged, iisually very obtuse. 



Surface color black, distinctly bronzed, the elytra with very little or no 



patches of white and brown pubescence: antennas annulate in the female. 



scutellatus. 

 Surface color brown, elytra sparsely mottled with small patches of gray 

 and brown pubescence; antennre of female uniformly pubescent. 



conl'usor. 



C\ — Tips of elytra obliquely prolonged and acute. Elytra brownish, surface 



feebly punctured, clothed with ochreous, white and brownish patches 



intermi.Ked iliarinorator. 



n. titillator Fab. 



The sculpture of the thorax is variable, either very sparsely punctate 

 or densely and closely punctate. Well developed males have the suture 

 prolonged in a distinct spine, sometimes, however, the angle is merely 

 acute. In the female the angle is usually acute, although sometimes 

 nearly as obtuse as in scuteUafus. The antennoe of the male are often 

 very long, e((ualling four times the length of the body ; in the female the 

 antennae are at most one and a half times the length of the body. 

 Length .50-1.25 inch ; 13-32 mm. 



The species described as minor Lee, is merely a small form, it is the 

 carolinensis Oliv. 



Occurs from Canada to Washington Territory and south to Florida. 



91. niaculosu!^ Hald. 



In mature specimens the surface color is (juite black and slightly 

 bronzed. The elytra are more coarsely and deeply punctured than in 

 titillator. The sutural angles of the elytra are acute but never spiniform, 

 and in the female very often rounded. The male antennae are rarely 

 more than twice the length of the body and in the female very little 

 longer than the body. Length .66— .1.00 inch; 16.5—27 mm. 



Specimens less mature resemble the darker varieties of titillator^ while 

 those more denuded might be mistaken for scutellatus. Specimens occur 

 with the scutellum uniformly white or with a median denuded line. 



Occurs from Montana to Washington Terr, and California, southward 

 through Colorado to Arizona. 



.^I. scutellatu!^ Say. 



Color quite black with a slight surface bronzing, the elytra either 

 entirely nude or with small scattered patches of whitish pubescence, 

 rarely with a slight dusting of brownish pubescence. Scutellum con- 

 spicuously white with often a partial or complete denuded median line. 

 The sutural angle in both sexes is obtuse or even rounded. The sculp- 

 ture of the elytra is variable, the males have coarser punctuation which 



