UHLER ON INSECTS. 791 



Ophiogo7nphus severus Hagen. 



Occurred singly, flying actively over Clear Creek in the caiion, or in 

 Beaver Brook Gulch, August 6 and 7. It was seen at many intervals 

 along the latter brook, even up toward the high levels, nearly 8,000 

 feet above the sea. Its color when living is a clear pea-green, with dark 

 purplish-brown markings on the thorax and abdomen. The stripes of 

 the legs are fuscous. Like many others of this group, it flies rapidly 

 backward and forward for the distance of a few yards over the running 

 water, and then lodges for a moment on a rock or projecting bush 

 Being very wary, it is quite difficult to capture. 

 Agrion hastatuon Say. 



A few specimens were captured in the western suburbs of Denver 

 August 5. 



Agrion sauciuni Burm. 



One female taken at the same place. 

 Agrion civile Hagen. ^ 



A few specimens were seen on the highlands west of Denver, in the 

 vicinity of Sloan's Lake, August 8 and 18. 

 Agrion sp. 



A species closely allied to, if not identical with, A. douhledayi Selys, 

 was very common around damp spots in the western suburbs of Denver, 



August 18. 



Fam. PERLID^. 

 Perla sp. 



A small species was found upon tall weeds and plants in the mouth 

 of the Grand CaSon of the Arkansas, August 10. 

 Chloroperla sp. 



A beautiful little green species occurred at the same place as the pre- 

 ceding. 



Fam. EPHEMERID^. 

 Baetis sp. 



One small species was common in Clear Creek Caiion, and two or 

 more smaller species were abundant near the canon of the Arkansas. 



Fam. TERMITID^. 



Termes sp. 



An insect closely related to T. flavipes Hagen, and of about the same 

 size, was common under stones near Colorado Springs, and beneath 

 chips and logs west of Caiion City, August 10 to 16. 



ORTIIOPTERA. 



Fam. MANTID^. 

 Mantis sp. 



The nymph of a narrow, small species was found stowed away at the 

 base of a yucca on the hill-side near Colorado Springs. It had taken 

 refuge there from the heavy storm in company with other insects. A 

 smaller specimen was swept from a sunflower at the same place. 



