NO. 1708. STUDIES OF NORTH AMERICAN WEEVILS— PIERCE. 337 



emarginate on the sides in front, elevated into a broad rounded 

 arcuate ridge in front, strongly depressed on the sides and in two 

 spots on the disk behind the middle. The body is extremely densely 

 clothed with a dull yellowish brown crust of closely appressed scales, 

 with numerous semierect brown and white setae, and with clusters 

 of close dark scales pushing up through the crust on the third inter- 

 space especially. 



The following are the records assigned distinctly to this species: 

 Canyon City, Colorado (Wickham); Denver, Colorado (Dyar and 

 Caudell); Fort ColHns, Colorado, June 17; Colorado Springs, Colo- 

 rado, June 15 (Wickham); Nebraska, Central Missouri, May (Riley), 

 Kansas. 



There is no essential difference in the sexes, as two pairs are before 

 me from Denver, the males being considerably smaller. 



THECESTERNUS MACULOSUS, new species. 



Described from one specimen in the collaction of the Southern Field 

 Crop Insect and Tick Investigations, collected by J. D. Mtchell and 

 R. A. Cushman at Marfa, Texas, June 6, 1908. 



Length 7.5 mm. Black, clothed with black and white scales, 

 mainly white below, mottled but arranged in more or less distinct 

 transverse fasciae with a black V on the base of the thorax; with black 

 and white setse more or less erect, and with erect masses of black 

 scales especially on the third interspace. 



Robust, outline broadly elliptic. Head convex, clothed with 

 broad, flat scales, white on the front, and black on the occiput with 

 three longitudinal lines of white and ochreous scales, setae sparse; 

 front sulcate. Prothorax a little wider than long, widest in front 

 of middle where it is almost as wide as the humeri, abruptly emar- 

 ginate and narrowed in front of this point; base sHghtly arcuate due 

 to humeral angles, apex arcuate; ocular lobes broad; impressions as 

 in foveolatus; vestiture dense; punctuation deep, irregular, and 

 rather coarse. Elytral base broadly roundingly emarginate with 

 a small triangular emargination at the suture; a little more than 

 twice as long as the prothorax; sides convex; striae deeply pitted, 

 intervals more or less moderately tuberculate especially on the sides; 

 scaly vestiture dense, with erect black and white setae, and with 

 masses of black scales on third interspace. Metathoracic sidepieces 

 causing a rather strong emargination of the elytra. 



This species is very differently colored from the next and has the 

 elytra shorter in proportion and more convex on the sides. I have 

 specimens at hand from Cotulla, Texas, May 11, 1906 (J. C. Craw- 

 ford and F. C. Pratt) ; Beeville, Texas, October 22 (Hubbard and 

 Schwarz); Big Springs, Texas (Wickham). 



Type.— Cat. No. 12592, U.S.N.M. 

 Proc.N.M.vol.37— 09 22 



