i>e!i>artm:en't ow the i^stterior, 



UNITED STATES GEOLOGICAL AND GEOGRAPHICAL SURVEY OF THE TERRITORIES. 

 F. V. HAYDEN, U. S. Geologist-in-Charge. 



I.-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, U. S. A. 



II -NOTICE OF A VERY LARGE GONIATITE FROM EASTERN 



]g:ANSAS. 



By F. B. meek. 



III.-FOSSIL ORTHOPTERA FROM THE ROCKY MOUNTAIN TER- 

 TIARIES. 



By SAMUEL H. SCUDDER. 



IV.-STUDIES OF THE AMERICAN FALCONIDJE. 



By EGBERT EIDGWAY. 

 MONOGRAPH OF THE POLYBOEI. 



Washington, February 8, 1876. 



