TRIBE XIX. ZYGOPINI. 4-1 



very gray scales. Beak a little shorter than head and thorax, feebly cari- 

 nate, sparsely and rather finely punctate. Thorax not longer than wide, 

 sides feebly curved: disc distinctly constricted near apex, coarsely and very 

 densely punctured, each puncture closed by an orbicular scale. Elytra at 

 base about one-fourth wider than thorax, thence feebly curved and converg- 

 ing to the rounded apex, umbones prominent; striae rather wide, marked 

 with close-set oblong punctures; intervals nearly flat, each with two irreg- 

 ular rows of punctures which are concealed by the narrow oval scales. 

 Length 3.5 4.5 mm. 



Lake and Martin counties, Ind., rare; July 7 July 30. Palos 

 Park, 111., June 11. Ranges from Indiana to Dakota and Colo- 

 rado, south to Arkansas and Texas. Pierce (1916) states that 

 it breeds in the sterns of Hi/nicnopappus, pupating in the larval 

 cells in the pith 



652 (- -). CYLINDKOCOPTURUS FLORIDANUS Casey, 1897, 674. 



Elongate-oval, convex. Black, above densely clothed with pale brownish 

 and white scales, the former more evident each side of median line of 

 thorax, the white ones densely covering the head, basal parts of beak and 

 the greater part of the elytra, in places forming indistinct lines thereon. Eyes 

 at lower third separated by only about one-fourth their width. Thorax 

 not quite as long as wide, slightly wider at apical third than at base, 

 densely and rather coarsely punctate. Elytra about one-fourth wider and 

 three-fourths longer than thorax, the stria? rather coarsely punctured. 

 Length 2 mm. 



Haw Creek, Fla. ; taken in numbers by Schwarz. ''Allied to 

 nautilus but differs in the extremely confused ornamentation, 

 smaller size and narrower form/' (Casey.} 



653 (8812). CYLIXDROCOPTURUS NANUI/US Lee., 1876, 261. 



Elongate-oval, convex. Black, above clothed with dark brown and 

 pale scales, the latter forming three ill-defined stripes on thorax; elytra 

 each with two faint dark clouds, one on the median third, the other near 

 tip, these separated by a pale sutural line and limited by pale bands; head, 

 base of beak and under surface more densely clothed with whitish scales. 

 Thorax slightly wider than long, widest at apical third, disc feebly con- 

 stricted near apex, densely and rather coarsely punctate. Elytra as in 

 operculatus. Length 2 2.5 mm. 



Harrison County, Ind., rare; June 11. Enterprise, Fla., June 

 8. Ranges from Ohio and Iowa to Maryland, Florida and Texas. 



654 (8815). CYLINDROCOPTTJRUS QUERCUS Say, 1831, 20; ibid, I, 286. 



Short, suboval, robust. Black, shining; under surface, sides of thorax 

 and base of beak densely clothed with rounded dirty white scales, which 

 also form a spot at middle of base of thorax and a sutural line and two in- 

 terrupted cross-bars on elytra; antenna^ dark reddish-brown. Beak slender, 



