DEFJ^LKTIVtElSrT OF THE IHSTTERIOE. 



UNITED STATES GEOLOGICAL AND GEOGRAPHICAL SURVEY OF THE TERRITORIES. 

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



I.-MONOGRAPH OF THE GENUS LEUCOSTICTE, SWAINSON; 

 OR, GRAY-CROWNED PURPLE FINCHES. 



By ROBEET EIDGWAY. 



II.-THE CRANIAL AND DENTAL CHARACTERS OF GEOMYD^E. 



By Dr. ELLIOTT COUES. 



in.-RELATIONS OF INSECTIVOROUS MAMMALS. 



By THEODOEE GILL. 



IV.-REPORT ON THE NATURAL HISTORY OF THE UNITED 

 STATES GEOLOGICAL A:ND GEOGRAPHICAL SURVEY OF 

 THE TERRITORIES, 1874. 



By EENEST INGEESOLL. 



BULLETIN, NO. 2.-SEC0ND SERIES. 



Note by the Geologist-dj-Chakge. — In ptililisliing a second series of the Bulletin, the pages will 

 he numbered consecutively until a volume is compl eted, so that individuals or societies retaining the 

 numhers as they are issued may hind them together. An effort will he made to nuHiher the plates and 

 figures in the same 'way. The final number will contain an index to the whole. 



IC 



