154 PROCEEDINGS OF THE ACADEMY OF [Feb., 



has the tegminal bars strongly marked, much as found in individuals 

 of that sex from the Huachuca Mountains, while the female is paler, 

 but is similar to a specimen of that sex from the latter locality. A 

 single female of this species was also taken on Grand View Point at 

 Cloudcroft, July 16, while an individual of the same sex from Fort 

 Wingate, New Mexico, taken August 16 by John Woodgate, has also 

 been examined. The disk of the wing is very pale greenish-blue in 

 the Cloudcroft male, glaucous blue in the Florida Mountains male, 

 campanula blue in the Florida Mountains female. 



This species is now known to occur in suitable surroundings in New 

 Mexico, in the Organ Mountains at about 5,700 feet, at 8,000 feet in the 

 White Mountains, at 5,400 feet in the Florida Mountains; in Arizona at 

 Flagstaff, in the Grand Canyon from 3,000 to 7,000, in Oak Creek 

 Canyon, at Prescott and in the Huachuca range. 



CIRCOTETTIX Scudder. 

 Circotettix undulatus (Thomas). 



It is very hard to understand Bruner's statement 17 that "this locust 

 is partial to bare, more or less alkaline ground, and for that reason is 

 found throughout the more arid regions wherever suitable localities 

 occur." Our experience with the species in Colorado, New Mexico 

 and Arizona shows its range to be chiefly in the Transition, Canadian 

 and Hudsonian zones, by no means in the "more arid" regions, fre- 

 quenting often "slashings" or cut areas in the forest region still covered 

 with the debris left by the lumberman. Here it delights in performing- 

 its interesting aerial dance, ascending as much as seventy feet in the 

 air, and hovering there for some minutes, keeping up its continual 

 clatter. Open hillsides in the park-like glade region of the higher 

 ranges are much frequented by these insects, and when the sun has 

 warmed them after the chill of the night they proceed with their regular 

 clattering music. 



At Cloudcroft, on July 14 and 15, this species was found numerous 

 in several situations, the greatest number being taken on the hillside 

 of James Canyon, where quite a colony was located and where their 

 clatter was continuous. In all a series of ten males and eleven females 

 was taken, comparatively little difference in size being exhibited by 

 the sexes, although in color the males are more blackish than the 

 females. 



It is interesting to note that when a series of forty-nine specimens 

 from Cloudcroft and Beulah, New Mexico, is compared with one of 



17 Biol. Cent.-Amer., Orth., II, p. 183. 



