302 Annals Entomological Society of America [Vol. X, 



Two other such cases were reported during the same summer 

 and fall, about ten and fifteen miles from Ft. Collins, the 

 one on the granite top of Horse Tooth Mountain, altitude 

 7,160 feet, and the other at about the same elevation. In 

 the latter case the beetles were said to be massed on a small pine 

 \tree. Another mass was reported to have been found on a 

 bare mountain-top west of Denver at about the same time of 

 year as the former instances. In March, 1917, on the plains 

 two miles west of Ft. Collins, Mr. L. C. Bragg observed hundreds 

 of convergens coming out from hibernation from under rocks and 

 stones near the road side. 



