BEETLES OF THE GENUS MYOCHROUS — BLAKE 27 



under the scales densely and moderately coarsely punctate ; lower front 

 less densely covered with scales, the scales being placed transversely. 

 Antennae reddish with the distal joints darker, of the usual propor- 

 tions, Prothorax almost as long as broad, with margin rather incon- 

 spicuously o-toothed and a tooth at apical and basal angles; convex 

 with a distinct depression along the basal margin most pronounced 

 over the scutellum, and in some specimens a marked median line, this 

 line varying in distinctness in individuals, also a tendency for a depres- 

 sion on either side behind the middle, in short the disk rather uneven ; 

 very densely covered with brown and white scales, the scales being 

 curved and hiding the punctation beneath ; punctures dense, confluent 

 and not very coarse or deep, becoming coarser near the basal angle. 

 Elytra wider than prothorax, smoothly convex with small humeri and a 

 short intrahumeral sulcus ; the rows of punctures densely placed, the 

 punctures becoming finer and not so dense toward the apex ; scales so 

 dense as to hide the punctation almost entirely, and rather thick and 

 curved. Body beneath deep reddish brown with the tip of the abdo- 

 men paler, shining, the abdomen not so densely covered by w^hite ap- 

 pressed scales, the first segment as in denticoUis, moderately densely 

 punctate; the female with a faint round depression in the middle of 

 the last segment, the male with a still fainter triangular depression 

 located near the tip. Legs reddish, covered with scales, the anterior 

 tibiae toothed on the inside, a very faint suggestion of toothing on the 

 hind femora. Length 3.8 to 5.5 mm. ; width 1.8 to 2.5 mm. 



Cotypes. — Five cotypes, one in the Schaeffer collection in the Na- 

 tional Museum, two in the collection of the South Dakota State Col- 

 lege, Brookings, S. Dak., location of the rest unknown. 



Type locality. — Elk Point, S. Dak. 



Other localities. — Kansas: Atchison County in collection of Uni- 

 versity of Kansas, collected by R. H. Beamer; Missouri: Atherton; 

 lowA : East Point. 



Remarks. — This is an easily recognized species because of its narrow 

 convex prothorax, which is almost as long as wide. It is also one of the 

 deep reddish brown species. The densely crowded scales on the entire 

 upper surface are unlike the sparse vestiture of M. denticollis. The 

 scales are not flatly appressed but curved and present a rounded ap- 

 pearance when viewed with a microscope, and they are coarser than 

 the scales of denticollis. 



MYOCHROUS FLORIDANUS Schaeffer 



Plate 2, Figtjke 6 



Myochrous floridanus Schaeffer, Journ. New York Ent. Soc, vol. 41, p. 472, 1933. 



From 5 to 6 mm. in length, elongate oblong, deep reddish brown to 



piceous, usually the prothorax darker, somewhat shining beneath 



the dense, appressed, yellowish and brown scales ; prothorax not quite 



