Diptera of Colorado and iNew Mexico. 



BY W. A. SNOW. 



SYRPHID^.* 



The material on which the following list is based is derived chiefly 

 from general entomological collections made by collecting parties 

 sent out by the University of Kansas under the direction of Prof. 

 F. H. Snow. The localities in which the greater part of the material 

 was collected are: Bailey, Park county, Colo.; Estes Park, Larimer 

 county, Colo.; Colorado Springs, Manitou, and Manitou Park, all in 

 El Paso county, Colo.; and the IMagdalena mountains, Socorro 

 county, N. M. Bailey is a Union Pacific station on the Platte river 

 at an altitude of 7,700 feet. Estes Park, shut in by high mountains, 

 has an elevation of about 7,000 feet. Manitou Park is about twenty 

 miles west of Manitou, on the Colorado Midland railroad, and but a 

 few miles from the famous fossil beds of Florissant. Its altitude is 

 8,500 feet. Elevations in the Magdalena mountains vary from 6,500 

 to 10,000 feet. The Townsend collection furnishes a number of 

 interesting species from Las Cruces, in southern New Mexico, altitude 

 3,800 feet. Others are derived from a large but indifferently preserved 

 collection presented to the University of Kansas by Dr. G. F. 

 Gaumer. Finally, I have availed myself of data furnished by the 

 collections of Prof. C. P. Gillette, of Fort Collins, Colo. 



Oallicera montensis Snow, Kan. Univ. Quart. I, p. 3 4, pi. vii, fig. 1. 



Taken only on mountain summits. The three specimens from 

 which the description was drawn were collected on the top of 

 Mt. Deception (9,000 ft.), Manitou Park, Colo., (August). Two 

 more specimens were collected on the top of one of the mountains ift 

 the Magdalena range. New Mexico, at the head of Hop Canyon 

 (9,500 ft.). Both were taken on the same day and subsequent 

 attempts to find others were unrewarded. The genus Callicera is 

 known elsewhere only at high altitudes in Europe. 



Microdon globosus Fabr. (nee Will., Synopsis, p. 4 = fuscipennis Macq.). 

 Microdon fuscipennis Will., Synopsis, p. 4 (nee Macq). 

 One specimen, Manitou Park, Colo. (August). 



* For recent changes in synonymy, see a succeeding paper entitled "Supplementary 

 List of North American Syrphidae." 



(KS5) KAN. UNIV. QUAB., VOL. Ill, NO. 4, APRIL, 1, 1895. 



