Xlll 
United States of America. — Continued: 
Abstract of Results of a Study of the Genera Geomys and 
Thoraomys; with addenda on the Osteology of Geomyidae, 
and on the Habits of Geomys Tuza ; by Dr. Elliott 
Coues. [Being the third part of the Report of Major 
Powell’s Exploration of the Colorado River of the West 
and its Tributaries, pp. 217 — 291.] 4to. 
Washington , 1875 
Some Account of Zapus hudsonius ; and on the Breeding 
Habits, Nest, and Eggs of the White tailed Ptarmigan, 
Lagopus leucurus; by Dr. Elliott Coues. 8vo. 
Washington , 1875 
An Account of the various publications relating to the 
Travels of Lewis and Clarke, with a Commentary on 
the Zoological Results of their Expedition ; by Dr. 
Elliott Coues. 8vo. . Washington, 1876 
Report of the United States Geological Survey of the 
Territories ; by F. Y. Hayden. Yol. VI. Contribu- 
tions to the Fossil Flora of the Western Territories. 
Part 1. The Cretaceous Flora; by Leo Lesquereux. 
4to. . . . Washington, 1874 
Annual Report of the United States Geological and Geo- 
graphical Survey of the Territories, embracing Colorado, 
being a Report of Progress of the Exploration for the 
year 1873 ; by F. V. Hayden. 8vo. Washington, 1874 
Bulletin of the United States Geological and Geographical 
Survey of the Territories. No. 1. 8vo. Washington, 1874 
List of Elevations, principally in that portion of the United 
States, West of the Mississippi River. Collected and 
arranged by Henry Gannett. 8vo. Washington, 1875 
Catalogue of the Publications of the United States Geological 
Survey of the Territories ; by F. Y. Hayden. 8vo. 
Washington, 1874 
From Dr. F. V. Hayden, United States Geologist-in-cliarge . 
