NORTH AMKRICAN COLEOPTKRA. 37 



M. Ulkoi 11. sp. — Stout, obloiif.', jiiceous, sligrhtly convex, dciiscly scaly 

 above and beneatli ; beak as long as the thorax, broader and flattened at base, 

 tricarinnte; sculpture concealed by the scales, latter brown, a median vitta taper- 

 ing to apex and (Uie each side white ; front broadly flattened with an indistinct, 

 transverse impression. Thorax one-half wider than long, base broadly rounded, 

 wider than apex ; sides as in interpimctatuius. Surface densely punctate ; con- 

 cealed by the scaly vestiture : latter brown, with three distinct and rather broad 

 vittfe, white ; median one consisting of two rows of scales separated by a fine, 

 impressed line; lateral ones slightly bisinuate; sides of thorax whitish; the 

 erect, club shaped hairs, like those of head and beak, are rather stouter than in 

 the preceding two species. Elytra one-fourth wider than thorax; strife well im- 

 pressed, punctures distinct ; interstices almost flat, slightly unequal in width, 

 each with a row of claviform setaj. Scales brown, variegated with w-hite; a 

 broad discal stripe, commenciug at base and almost reaching tlie apex, white; a 

 line extending from near the humeral angle, diagonally toward the suture, 

 brown; humeral spot and scutellum white. Body beneath densely punctured; 

 scales grayish brown. Legs densely scaly; femora annulatod with white near 

 the apex, and, like the tibise, stouter than in the preceding two species. Tarsi 

 fringed at the sides with stifl" hairs, intermixed with long, soft pubescence ; third 

 joint scarcely one half longer than second. Length 4.5-5 mm.; .18-. 20 inch. 

 Plate L flg. 5. 



% . Last ventral slightly concave. 



9 . Apex of last ventral impressed, eniarginate. 



A distinct and easily recognized species. The white scales of the 

 elytra vary greatly in extent. 



It gives lue pleasure to dedicate this species to my friend, Mr. H. 

 Ulke, of "Washington, to whom I am greatly indehted for favors 

 received. 



Hab. — Dakota, Texas, Wyoming, N. B. 



M. doi'i^alis n. sp.— Very closely allied to the preceding, from which it dif- 

 fers as follows: Markings identical, but the white of the former is here replaced 

 by pale brown ; less sharply defined. Thorax more than one half wider than 

 long and more strongly rounded at the sides; eiytral strife finer, feebly im- 

 pressed. Third tarsal joint distinctlj- longer, almost twice the length of the 

 preceding, more deeply bilolicd. 



S . Last ventral segment with an ill defined, triangnlar, smooth 

 flattened space. 



9 . Apex of last ventral with a profound, sharply defined, lunate 

 fovea ; deeply eniarginate. 



Might easily be taken for Ulkei, to which it has a deceptive resem- 

 blance. The above characters, however, will readily decide the 

 identity. A specimen in Dr. Horn's collection has the scales almost 

 white, and decidedly preponderating. 



Hab. — Illinois, Texas, Louisiana. Four specimens. 



