10 PRELIMINARY LIST 



in September in the region of the foot-hills (Uhler, 5). Custer County, midal- 

 pine, and Summit County (Cockerell, 10). 



Fort Collins, July 4th; North Park, July 20th; Steamboat 

 Springs, July 26th (Gillette). Fort Collins, July 29th, on 

 wheat; Steamboat Springs, July 14th (Baker). 



Corhiielaena albipennis Say. 



Of this species Dr. Uhler says: "Prof. Gillette has most kindly sent to me the only 

 specimen of this insect of which there is any record of capture since the time of Mr. Say. It 

 is a species of prominent interest in many respects. In the first place, it is in an undeveloped 

 stage of coloring, showing that o.xydation of tlie outer integuments had not been com- 

 pleted when the insect was captured. It is also a female of uriusually large size, in this 

 section of the genus, and it is not in the first stage of exclusion from the skin of the 

 nymph. The body is a little more bloated and consequently more convex above than in 

 the fully dried insect. The contour is fringed all around with slender setae, us in C. 

 iMliata Uhler. Its size is much less than that given by Mr. Say, but it agrees with his 

 descr:ption in nearly every respect. The hemelytra are not 'wh'te with a small rufous 

 spot,' but white with a spot and tinge of black near the upex, such as occurs in the drying 

 stage of C. lateralis Fab., a few hours after It has left the skin of the nympha. The 

 'small rufous spot' of Mr. Say suggests a more recently excluded condition of the 

 species, in which the color beginning as white had oxydized to rufo-piceous on its way to 

 the final piceous or black color of the fully matured insect. C. unicolor Pal. Beauv be- 

 comes almost uniform castaneous, or rufo-castaneous, as it changes from the milky white 

 of exclusion to the final black." 



This specimen was first determined by Osborn, who 

 recorded it as the first specimen found since Say's description 

 (see Osborn, 1). Fort Collins, August 11th, on Cllycyrrhiza 

 lepidota (Baker). 



Corhiielaena anthracina Uhl. 



Steamboat Springs, July 13th (Baker). Estes Park, July 

 12th (Gillette). 



Corhiielaena atra A. & S. 

 Colo. (Gillette— see Osborn, 1). 



Kist Canon, April 16th (Gillette). Veta Pass, June 27th 

 (E. A. Schwarz). 



Corhiielaena ciliata I'hlei-. 



Foot-hills five miles west of Fort Collins, hibernating 

 under stones, March 22d to April 12th (Gillette and Baker), 

 Corhiielaena coenilescens Stal. 



Colo. (Ridings, see Uhler, H). 

 Corhiielaena extensa Uhl. 



Horsetooth Gulch,-^ May 18th (Gillette). 

 Corhiielaena nitidiiloides Wolft. 



Above timber line in mountains. (Carpenter, see Uhler, 6). A few speci- 



*A gulch about nine miles south-west of Fort Collins. 



