NO. 1708. STUDIES OF NORTH AMERICAN WEEVILS— PIERCE. 349 



This species differs from longisternus in the following particulars: 

 Length 8 mm. Elongate oblong-oval, rather depressed above, 

 densely clothed above with seneus, white and dark scales which are 

 polygonally crowded and present a tessellate appearance. Head 

 closely squamose; beak strongly medianly impressed in over apical 

 half. Ocular lobes absent, vibrisssB long and conspicuous. Pro- 

 thorax a little longer than wide, subcylindrical. • Elytra about twice 

 as long as wide, and three times as long as the prothorax. 



Like the other two species in the genus, this species is clad with 

 polygonal flat scales above, and with ogival, striate, plumose scales 

 below. The alternate intervals of the elytra are slightly more promi- 

 nent. The genus is also characterized in all three species by the 

 short prosternum in front of the coxse, and by the absence of ocular 

 lobes, but presence of ocular vibrissse. 



Type.— Ca,t. No. 12597, U.S.N.M. 



Geuus DIAMIMUS Horn. 



DIAMIMUS SUBSERICEUS Horn. 



Probably several species are now included in the museum material 

 which is from Laramie, Wyoming, April 25 (Soltau); Cheyenne, 

 iVyoming; Helena, Montana; American Fork Canyon, Utah, June 25; 

 Glenwood, Colorado, May 15 (Hubbard and Schwarz) ; Berkeley, Colo- 

 rado, May 8 (E. J. Oslar) ; Winslow, Arizona, July 18 (Wickham). 



Genus PERITAXIA Horn. 



PERITAXIA RUGICOLLIS Horn. 



Garland, Colorado, June 19 (Hubbard and Schwarz); Leadville, 

 Colorado, July 7 (Wickham); Durango, Colorado, July 23; Tercio, 

 New Mexico, May 9 (Hopkins) ; Dripping Springs, Organ Mountains, 

 New Mexico, (Cockerell) ; Magdalena, New Mexico (Wickham) ; 

 Arizona (Morrison). 



PERITAXIA HISPIDA Horn. 



Northern Colorado (Wickham) ; Colorado (Hubbard and Schwarz). 



PERITAXIA PERFORATA Casey. 



Big Springs, Texas (Wickham); Ranger, Texas, July 25. 



Genus ANAMETIS Horn. 



The species in this genus are clad beneath with broad, fan-shaped 

 striate, plumose scales. 



ANAMETIS GRISEA Horn. 



Detroit, Michigan, June 25 (Hubbard and Schwarz) ; Independence, 

 Iowa; Iowa City, Iowa, April 17, May 5 (Wickham); West Point, 

 Nebraska, June (Bruner) ; Rock Bluff, Nebraska (Elliott) ; Kansas • 

 Laramie, Wyoming (Wickham) ; Montana, 



