UHLEE ON INSECTS. 795 



Hadrotettix trifasciata Say. 



Very common iu many places near Colorado Springs, in the valley of 

 the Arkansas, from Pueblo as far west as to the mouth of the Grand 

 Canon, but not in it ; also at Bijou, August 19. Around Canon City it is 

 extremely variable and very beautiful. On the pale sands at that place 

 it is sometimes of a rosy yellowish, with narrow and very conspicuous 

 brown bands on the wing-covers, while on the wet and dark soils it is 

 pale fuscous, with dark fuscous markings. The face and sides of the 

 prothorax iuferiorly are sometimes white, occasionally bright ochreous, 

 or dull dark gray. 



Tomonotus tenehrosus Scudder. 



A few specimens were seen between Caiion City and the mountains, 

 August 11. 



Dissosteira longipennis Scudder. 



Found in the region west of Colorado Springs, but in very few indi- 

 viduals. The purplish-black color of the wings is very showy in the 

 bright sunlight, and more brilliant than in the other species, which have 

 a dark base to their wings. August 12 to 16. 



Sesperotettix virldis Thomas. 



This exquisitely beautiful little Acridioid occurred in Beaver Brook 

 Oulch and near the mouth of the Craud Caiion of the Arkansas. It is 

 also not uncommon in the cranberry-fields of Atlantic County, New 

 Jersey. August 6 to 11. 



When living, the stripes of the prothorax, the costal area of the teg- 

 mina, and the stripes and clouds upon the femora are of a coral red 

 color, exceedingly clear and vivid. Varieties occur which are destitute 

 of the red, and which have a very pale green line along the middle of 

 the prothorax. 



Specimens from Texas and Mexico have also passed through my hands. 



Dactylotum hicolor Charp. — PezofetUx picta Thomas. 



Large numbers of specimens of this most beautiful of all the Calopteni 

 have passed through my hands. They were from Mexico, Texas, New 

 Mexico, Arizona, Indian Territory, and Kansas. Specimens from Mexico 

 were of both patterns of color, either with the bright red spots and bands 

 between the greenish- black bands, or with the red color absent and re- 

 placed by yellow or greenish-yellow. The latter is the color figured by 

 Charpeutier, and is ordy a condition of the other. On the plains west 

 of Colorado Springs I found great numbers of them iu the tall grass, 

 and in the damper situations they were of both styles in the same places. 

 At Colorado Springs, they are chiefly of the red color, and only rarely 

 did I meet with a pale one. There are no structural differences to sep- 

 arate the two varieties. It seems to me that the pale color is only a con- 

 dition of the brighter-colored one, and that if we kept them under fav^or- 

 able conditions they would all remiin dull-colored. At least, this was 

 the case with some specimens of Brachjjstola, mtKjna which I kept for a 



