54 Proceedings of the 



Finally, the following are peculiar to the Transition in the Pine 

 ridge region : 



333. Sharp-shinned Hawk. 533. Pine Siskin. 



337a. Krider Hawk. 560a. Western Chipping Sparrow. 



349. Golden Eagle. .566. White-winged Junco. 



355. Prairie Falcon. GOT. Western Tanager. 



356. Duck Hawk. 615. Violet-green Swallow. 

 393c. Rocky Mountain Hair y G27a. Western Warbling Vireo. 



Woodpecker. 629b. Plumbeous Vireo. 



394b. Batchelder Woodpecker. 656. Audubon Warbler. 



408. Lewis Woodpecker. 675a. MacGillivray Warbler. 



425. White-throated Rock Swift. 727c. Rocky Mountain Nuthatch. 



466a. Alder Flycatcher. 754. Townsend Solitaire. 



492. Pinion Jay. 758a. Olive-backed Thrush. 



521. Red Crossbill. 768. Mountain Bluebird. 



To recapitulate, we have: 



Forms generally distributed in the state 34 



Forms excluded only from the Pine ridge region. . 22 



Forms generally distributed in prairie, sand-hill, 



and plains regions 12 



Forms belonging to the Missouri and prairie re- 

 gions 64 



(Forms migrating through these two regions alone 32) 



Forms peculiar to the Missouri region 24 



Forms peculiar to the prairie region 



Total Carolinian forms (excluding migrants).... 8> 



Forms of general distribution in the Sonoran area 16 



Forms peculiar to the sand-hill region 15 



Forms peculiar to the plains region 12 



Forms common to plains and Pine ridge regions. . 8 



Total Upper Sonoran forms 51 



Forms peculiar to the Pine ridge region (Transi- 

 tion) 25 



232 



The five regions may be contrasted thus, excluding from each 

 the forms which show a tendency to straggle into it from another : 



SUMMER PECULIAR 



RESIDENTS TO IT 



Missouri region 144 24 



Prairie region j[. . 132 



Sand-hill region '. . . 99 15 



Plains region 104 12 



Pine ridge region 67 35 



