A Catalogue of the Coleoptera of 

 Colorado. 



By H. F. WICKHAM. 



The Coleoptera of Colorado have been made the subject of 

 numerous memoirs, of more or less importance, since Congress 

 gave the region its name and territorial standing in 1861. 

 Most of the earlier explorations were made under the auspices 

 of the Federal Government, and the results were published in 

 the reports of the department which had the expedition in 

 charge. A short sketch of these papers may not be out of 

 place. 



In the year 1869, C. Thomas made a collection which was 

 reported upon by Dr. G. H. Horn. 1 The route followed ran 

 from Cheyenne, along the eastern flanks of the Rocky Moun- 

 tains, to Denver, whence side trips were made to Georgetown, 

 Central City and the Middle Park. The party then went 

 southward, through Colorado City, Soda Springs, Canon City, 

 and Trinidad, across the Raton Mountains into New Mexico. 

 Returning, Colorado was again entered and collections made 

 in the San Luis Valley, Poncha Pass, Arkansas Valley, South 

 Park and Denver. No records of localities were kept and 

 consequently the list has little value to the student of distri- 

 bution. 



A few years later, Lieut. W. L. Carpenter, U. S. A., col- 

 lected some beetles at various points, among which may be 

 noted Colorado Springs, Fairplay, Twin Lakes, the South 



1 A List of Coleoptera collected by C. Thomas in Eastern Colorado and 

 Northwestern New Mexico during the Survey of 1S69. By Dr. G. H. Horn. 

 Hayden's Preliminary Report of the U. S. Geol. Survey of Wyoming and 

 portions of contiguous Territories, for 1870. Washington, 1872. 

 V— 3 1 



