BEETLES OF THE GENUS MYOCHROUS — BLAKE 23 



rather coarse punctures. Antennae extending below humeri, distal 

 joints thickened, deep reddish brown becoming darker. Prothorax 

 almost as long as wide, rather convex in middle, depressed over the 

 head, lateral margin without toothing but angulate near apex and 

 often with a little angularity or undulation near base, a small apical 

 and basal tooth ; confluently punctate in lines, these forming a slight 

 ridge on either side near the base. Elytra with small humeri and a 

 short intrahumeral depression, the rows of punctures not very closely 

 placed and becoming less dense and finer toward the apex, punctures 

 not round but angular and between them finer, shallower punctures, 

 the points of attachment of scales, the brown and white scales easily 

 rubbed off, forming in well-marked specimens a lateral white inter- 

 rupted vitta and spot near the apex. Body beneath shining with a 

 bronzy luster and covered with fine white scales, first abdominal 

 segment densely and finely punctate; tip of abdomen in male with a 

 small pit, only a faint depression in female, a small undeveloped tooth 

 on inner side of anterior tibiae. Hind femora not distinctly toothed. 

 Length 4 to 5.4 mm. ; width 1.9 to 2.6 mm. 



Type.— A male, U.S.N.M. No. 59024, collected by McCrory, May 20, 

 1928. 



Type locality. — Mount Pleasant, Iowa. 



Other localities. — Illinois; Missouri: Columbia; Kansas: Chero- 

 kee County, Coffey County (R. H. Beamer; on rosinweed) ; Onaga 

 (F. F. Crevecoeur) ; Topeka (Popenoe) ; Indian Territory: Vinita 

 (H. F. Wickham) ; Texas: No specific locality (Belfrage) ; College 

 Station (W. D. Pierce), Columbus, Cypress Mill, Edna (J. D. 

 Mitchell), Victoria (J. D. Mitchell), Lee County (Fall collection). 



Remarks. — This species is intermediate between M. squamosys^ the 

 species with very wide scales, and M. severini, the species with very 

 short, small scales. The aedeagi of intermedius and severini are 

 almost indistinguishable in their outward appearance. The beetles 

 are easily distinguished by the difference in vestiture and the less 

 marked angularity on the sides of the thorax of intermedius. From 

 squamosus it is to be distinguished by its narrower scales, and the 

 fact that the punctures on the prothorax are not distinctly separated 

 but are fine and in dense lines of confluent punctures. 



MYOCHROUS SEVERINI, new species 



Plate 2, Figuke 2 



From 4.5 to 5.5 mm. in length, elongate oblong, rather dull black, 

 with a faint bluish luster, with sparse, short, fine, white scales, pro- 

 thorax feebly 2-tootlied or 2-angled along margin and finely and con- 

 fluently punctate in lines; elytral punctation not dense, and finer 

 toward apex, striate punctures not round but somewhat triangular or 



