376 PROCEEDINGS OF THE ACADEMY OF [Sept., 



HIPPISCUS Saussure. 

 Hippiscus rugosus (Scudder). 



St. Louis, Missouri, Aug. 27, 1 ? . 



A single specimen of this species was seen and taken in a vacant 

 city lot overgrown with weeds. 

 Hippiscus conspicuus Scudder. 



Colorado Springs, Aug. 17, 1 9 . 



But one specimen of this species was seen. 



Hippiscus maculatus Scudder. 



Mammoth Hot Springs, Yellowstone Park: summit of neighboring 

 foothills. Aug. 5, 1 9 ; summit of foothills of Gallatin Range, Aug. 5, 

 1 9. 



A little doubt is attached to the identification of these specimens. 



This species was scarce, but other specimens could have been taken 

 had not the country been so hilly. Specimens would rise from the 

 sage-brush hillside and fly some distance much more swiftly than one 

 could follow. 

 Hippiscus altivolus Scudder. 



Near Mountain View, Pike's Peak, Colorado, 10,100 feet, Aug. 20, 1 d^ . 



This is apparently the first additional record of the species since the 



Fig. 10.— Hippiscus altivolus Scudder. Pike's Peak, Colorado. Lateral \-iew of 

 male. (X 3.) 



original description (Mt. Lincoln, Colorado, above timber, 11,000- 

 13,000 feet above sea-level; Como, Colorado, 9,500 feet). 



This specimen was found on the cog-wheel railroad track, in a spot 

 where on each side almost the only vegetation was a dense thicket of 

 aspen. The insect's flight was erratic and exceedingly swift. 



