SUBFAMILY X. CURCULIONIXvK. 



GROUP II. (OBTENTUS GROUP.) 



Oblong or elongate-oval species having the beak as long as 

 thorax, rather stout, usually somewhat flattened near tip, an- 

 tennae inserted near its middle; thorax as wide or wider than 

 long, sides rounded, disc usually distinctly carinate; elytra at 

 base but little wider than thorax, humeral angles obtusely 

 rounded, not prominent, sides parallel to middle or beyond, then 

 obliquely narrowed to tips. 



KEY TO SPECIES OF GROTP II. 



a. Thorax distinctly constricted near apex; femora usually with a single, 



often nearly obsolete tooth. 

 &. Alternate intervals of elytra without stiff erect spines. 



c. Larger, 4 or more mm.; thorax distinctly carinate; elytra with- 

 out a pale transverse band. 

 (1. Thorax with an elongate median spot of white scales. 



807. OBTENTUS. 



dd. Thorax with sides broadly pale, the disc black. 808. FALLAX. 



cc. Smaller, less than 3 mm.; thorax not carinate; elytra with a pale 



transverse band. 809. MIXTJTISSIMUS. 



lib. Alternate elytral intervals with short, stiff, erect setse or spines; 



length 3 3.7 mm. 810. APICULATUS. 



oo. Thorax feebly or not at all constricted near tip. 



e. Form elongate-subcylindrical; thoracic carina almost impercepti- 

 ble; elytra black with white mottlings. 



f. Beak stout, shorter than thorax, strongly punctate; femora with 

 a small blunt tooth; smaller. 3.23.7 mm. 811. LONGUS. 



f/. Beak rather slender, as long as thorax, almost smooth; femora 

 unarmed; larger, 4.2 4.5 mm. 812. SCHWARZI. 



ee. Form elongate-oval; thoracic carina distinct; elytra densely clothed 

 with grayish-brown scales, with tufts of darker bristles on alter- 

 nate intervals; femora with two distinct teeth. 813. TRISTIS. 



807 (8794). CRYPTORHYXCHUS OBTK^TI-S Herbst, 1797, 38. 



Elongate-oval. Sooty-black, densely clothed with small, depressed scales, 

 with very short bristles intermixed; thorax with an elongate median spot 

 of large whitish scales, wider at middle and including a dark central spot, 

 its front part often in part abraded, leaving it of a Y-shape; elytra with a 

 large spot of yellowish scales crossing the suture just behind the middle; 

 scutellum white or yellow. Beak coarsely and rather densely punctate, 

 obsoletely carinate. Thorax one-third wider than long, sides nearly paral- 

 lel from base to beyond middle, then strongly rounded to apex. Third and 

 fifth intervals of elytra strongly elevated. Length 4.7 6.8 mm. 



Lake, Vermillion and Crawford counties, Tnd., scarce; May 

 29 Sept. 5. Riverside and Willow Springs, 111.; .Tune 13 July 

 11. Hopatcong, Ft. Lee and Orange Mts., N. J. ; June. Enter- 



