12 Merriam — Geograpluc Distribaiion oj Life. 



,. , , ,, ,T • , ■ Limit on the Based ,, , 



Dnte Author Aunie (iiirit to ri'(/ion ^^ ,, o ,i honk 



1803 Verrill Alleglianian C. F. A. Birds . . . 



1863 Binney (W .G.) . Interior C. F. A. Mollusks 



1866 Baird Eastern C. F. G. Birds . . . 



186() Grise))ach Forest L. T. G. Plants . . 



1870 Brown Appalachian C. F. G. Forests.. 



1871 Allen Eastern C. F. G. Animals. 



1873 Cope Eastern (?) A. Animals. 



1874 Porter Forest C. F. G. Plants... 



1876 Wallace AUeghanian C. F. G. Animals. 



1882 Engler Appalachian Province C. F. G. Plants... 



1883 Packard Eastern C. F. G. Animals. 



1883 Jordan Atlantic Ptegion C. F. G. Mollusks 



188-4 Sargent Deciduous Forests .. . C. F. A. Forests.. 



1884 Drude Virginian C. F. G. Plants... 



1886 Ilartlaub Alleghanian C. F. G. Binls. . . . 



1887 Heilprin Alleghanian C. F. G. Animals. 



1887 Brendel Mixed Forest C. F. G. Plants. . . 



1889 Ridgway Eastern Province ... . (?) G. Birds... 



1 

 2 



1 

 1 

 1 

 2 

 2 

 1 

 •> 



2 



2 

 2 

 2 

 •) 



1 



Central or Middle Division. — This division extcncls from the 

 eastern border of the great plains to the Sierra Nevada and Cas- 

 cade Mountains. It was first proposed by Agassiz in 1854, under 

 the name ^Table-land Fauna or Fauna of the Rocky Mountains.'^ 



The extent to wliich it has been recognized will appear from 

 the following table : 



o 



Ddti^ Author Name giren to reyion Based on Rank 



1854 Agassiz Table-land Fauna Animals 3 



1859 Le Conte Central Distiict Insects 1 



1863 Binney (W. G.) Central Province Mollusks 1 



1866 Baird Middle Province Birds 1 



1866 Grisebach .... Prairie Region Plants 1 



1873 Cope Central Region Rei)ts. and batrs. 2 



1876 AVallace Rocky Mountain Subregion. Annuals 2 



1S78 Allen Middle Province Animals 2 



1881 Gray Central Province Plants 1 



1883 Packard Central Province Animals 1 



1883 Jordan Central Region ' Mollusks 3 



1884 Drude Montana District Plants 2 



1886 llartlaul) Rocky Mountain Region . . . liirds 2 



1887 Heilprin Rocky Mountain Subregion. Animals 2 



1887 Brendel Prairie Flora Plants 1 



1889 Ridgway Rocky Mountain or Middle Birds 2 



District. 



