1906.] NATURAL SCIENCES OF PHILADELPHIA. 393 



several specimens the evanescent bar (proximal) is present but incom- 

 plete. The coloration of the caudal tibiae varies from the usual light 

 tint to a dark glaucous blue. The size of the specimens is quite 

 uniform. 



This species has been recorded from Washington (Yakima), Oregon, 

 (Umatilla), Idaho, Montana, Wyoming, Utah and Los Angeles, 

 California. 



This species was found in the same locations as T. cyaneipennis, 

 Avhich species it much resembled in habits. 

 Trimerotropis cyaneipennis Bruner. 



Salt Lake City, Utah, Aug. 13, 4 d", 4 9 . Foothills, Salt Lake City, 

 Utah, Aug. 14, 3 ^^,2 ?. 



This series is quite uniform in size, while variation in coloration is 

 chiefly due to the intensity of the broken tegminal bars, though one 

 specimen from Salt Lake City is uniforml}^ very pale with most of the 

 markings almost obsolete. 



This species has been recorded from the Salt Ijake Valley region, 

 and from Grand Canon, Flagstaff and Prescott, Ai-izona. The two 

 males recorded from Prescott are very considerably darker than any 

 of the Salt Lake A' alley specimens examined. 



This species was somewhat common but inhabited the most inacces- 

 sible portions of Ensign Peak, and owing to the rapidity of its flight 

 specimens were taken Avith no little trouble. 



CIRCOTETTIX Scudder. 

 Circotettix carlinianus (Thomas). 



]\Iammoth Hot Springs, Yellowstone Park, Aug. 5, 1 9 . 

 Circotettix undulatus (Thomas). 



Manitou, Colorado, 6,400 and 6,700 feet, Aug. 23, 1 c^, 1 9 . pike's 

 Peak, Mountain View, 9,700 feet, Aug. 20, 1 d', 1 9 . Cripple Creek, 

 Teller Co., Colorado, Aug. 19, 4 c^. 



These specimens have been compared with a series of twenty speci- 

 mens from localities in the mountain regions of New Mexico, and one 

 from Utah. Manitou individuals are more reddish than those from 

 the other localities. 



This species was nowhere abundant, but several specimens were 

 found on the tailings about Cripple Ci'eek mines. 

 Circotettix rabula^n. sp. 



Types : (d and 9 ; summit of hill at head of springs. Mammoth Hot 



*' I.e., a jangling fellow. 



