TIMBK XVIII. - P.Alt I XI. 381 



curved, that of male finely striate-punctate; of female finely and densely 

 punctate on basal third, minutely and sparsely punctate, strongly pol- 

 ished on outer two-thirds. Antennae inserted far behind the middle; second 

 joint of funicle one-half longer than third. Thorax conical, one-half 

 wider than long, narrowed from base, feebly constricted near apex; 

 disc finely and very densely punctate, its scales arranged obliquely. 

 Elytra at base slightly wider than thorax, thence gradually narrowed 

 to the rounded apex; striae deep, punctured; intervals flat, densely punc- 

 tate, each with two or three rows of scales. Prosternum of male narrow- 

 ly and very deeply excavated along the middle, with a short, erect, curved 

 pointed horn before each coxae. Length 2.1 2.7 mm. 



Very common throughout southern Indiana, not taken north 

 of Vermillion and Hamilton counties; April 23 Sept. 24. Beaten 

 from dogwood blossoms on the former date ; taken from flowers 

 of white snake-root, Eupa tor unit fic/eratoides L. on the latter. 

 Common throughout New Jersey, June to August, on flowers. 

 West Point, N. Y. Ormond, Eustis and Dunedin, Fla. ; Jan. 26 

 Nov. 25. Ranges from New England to Nebraska, south to 

 Florida and Arizona. Varies in the color of the upper surface, 

 the elytra sometimes being dull reddish-brown and again shining 

 black ; also in the color and density of the scales, those of the 

 black specimens being paler and less dense. Infests the steins of 

 yellow fox-tail grass, Gluciocliloa glaiica L. and has been taken 

 on many other plants. (Webster.) Not rare on palmetto blos- 

 soms in Florida. 



577 (11,157). CESTTRINUS AL.BOTECTUS Casey, 1892, 582. 



Rather narrowly oval, convex. Black, densely and uniformly clothed 

 with rather wide white scales, which are but slightly broader and denser 

 beneath. Beak scarcely longer than head and thorax in male, one-half as 

 long as body in female. Male with a long, very slender finely acuminate 

 horn before each coxa, the process being inclined forward and very feebly 

 curved; also a small, semi-glabrous flattened spot near base of abdomen, in 

 which the scales become sparse but not erect or divided as in similar spot 

 of picumnus. Length 1.7 2.3 mm. 



Anglesea, N. J., July. Sanford, Fla., scarce; Apr.5 9. De- 

 scribed from Florida and Texas. Known also from Mississippi 

 and District of Columbia. "Distinguished from i>iciunnus by its 

 broader white scales, shorter beak, smaller size and more slender 

 form." (Casey.) 



578 (11,158). CENTRINUS GRISESCENS Casey. 1892, 583. 



Rhomboidal, elliptical, convex. Dull black, densely clothed beneath 

 with large, wide, yellowish-white scales, above with narrower luteous white 

 scales, with a few dark brown ones intermingled, the latter more evi- 

 dent in two more or less distinct spots near apex. Beak strongly cur- 



