1878. ] United States Survey of the Territories. 107 
Boston, spent two months in Colorado, Wyoming, and Utah, in 
explorations for fossil insects, and in collecting recent Coleoptera 
and Orthoptera, especially in the higher regions. They made 
large collections of recent insects at different points along the 
railways from Pueblo to Cheyenne and from Cheyenne to Salt | 
Lake, as well as at Lakin, Kans., Garland and Georgetown, Colo. 
and in various parts of the South Park and surrounding region. 
For want of time, they were obliged to forego an anticipated 
trip to White river, to explore the beds of fossil insects known to 
exist there. Ten days were spent at Green river and vicinity in 
examining the Tertiary strata for fossil insects, with but poor re- - 
sults; the Tertiary beds of the South Park yielded but a single 
determinable insect, but near Florissant the Tertiary basin, de- 
scribed by Dr. A. C. Peale in the annual report of the Survey, for 
1873, was found to be exceedingly rich in insects and plants. 
In company with Rev. Mr. Lakes, of Golden, Mr. Scudder spent 
several days in a careful survey of this basin and estimates the in- 
sect-bearing shales to have an extent at least fifty times as great 
as those of the famous locality at Œningen in Southern Bavaria. 
From six to seven thousand insects and two or three thousand 
plants have already been received from Florissant, and as many 
-= More will be received before the close of the year. 
Mr. Scudder was also able to make arrangements in person with 
parties who have found a new and very interesting locality of Ter- 
tiary strata in Wyoming, to send him all the specimens they work 
out, and he confidently anticipates receiving several thousand in- 
sects from them in the course of the coming winter. The speci- 
mens from this locality are remarkable for their beauty. There is, 
therefore, every reason to believe that the Tertiary strata of the 
Rocky mountain. region are richer in remains of fossil insects than 
any other country in the world, and that within a few months the 
- material at hand for the elaboration of the work on fossil insects, 
_ which Mr. Scudder has in preparation for the Survey, will be much 
larger than was ever before subject to the investigation of a single 
naturalist. 
Prof. Joseph Leidy, the eminent comparative anatomist and mi- 
À _ croscopist, made his second visit to the West the past season, under 
— the auspices of the Survey. He made a careful exploration of the 
country about Fort Bridger, Uintah mountains, and the Salt Lake 
basin, in search of rhizopods. He has been engaged for a long 
