BIRDS OF NORTH AND MIDDLE AMERICA. 



143 



Adult female.— Ijeiv^th (skins), 139-168 (154); wing, 93-101.5 

 (98.1); tail, 56.5-66.5 (60.8); exposed ciilmen, 11-13.5 (12.3); 

 tarsus, 13-21 (20); middle toe, 15-17.5 (16. 3). « 



United States and southern Canada east of Rocky Mountains; 

 north to Nova Scotia, southern New Brunswick, southern Maine, 

 Vermont, northern New York (Adirondacks), northern Ontario (Moose 

 Factory, Muskoka, etc.), and Manitoba (Assiniboine River, Winnipeg, 

 Portage la Prairie, Lake Manitoba, etc.), occasionally to northern 

 New Brunswick, northern Maine (Houlton) and southern Quebec (God- 

 bout) ; west to eastern base of Rocky ^Mountains, in Montana, Wyo- 

 ming (Cheyenne) and Colorado (Fort Lyon, breeding. Fountain, 

 Denver, Pueblo, etc.); breeding southward to southern Florida and 

 along the Gulf coast to southern and west-central Texas (Kerr, 

 Bexar, Concho, Harris, Valverde, and Hidalgo counties); Bermudas 

 (resident) ; accidental in Cuba. 



[Moladllaj sialis Linn.eus, Syst. Nat., ed. 10, i, 1758, 187 (based on Blue Red- 

 breast, Rubecida, dorso cseruko, Edwards, Nat. Hist. Birds, pi. 24; Bluebird 

 Catesby, Nat. Hist. Carolinia, i, 47, pi. 47); cd. 12, i, 1766, 336. 



Motadlla sialis Lesson, Traite d'Orn., 1831, 416. 



[Motadlla] scalis (typographical error) Gmelin, Syst. Nat., i, 1788, 989. 



Ficedula salts (typograpliical error) Sch.effer, Mus. Orn., 1789, 36. 



[Sylvia] sialis Latham, Index Orn., ii, 1790, 522. 



a Forty-one specimens. 



Specimens from different geographic areas compare in average measurements as 

 follows : 



Locality. 



MALES. 



Ten adult males from District ol Columljia to New Ilamp 

 shire 



Seven adult males from South Carolina and Georgia 



Ten adult males from Miami, Florida 



Ten adult males from other parts of southern Florida 



Ten adult males from Illinois and Texas , 



Four adult males from Bermudas 



FEMALES. 



Ten adult from District of Columbia and Maryland 



Six adull females from South Carolina and Georgia 



Seven adult females from Miami, Fla , 



Eight adult females from other parts of southern Florida. . 



Nine adult females from Minnesota to Mississippi 



One adult female from Bennudas ,.. 



Wing. 



100.6 

 100. 1 



!>!).6 

 100.7 



99.1 

 101.7 



63.(3 

 63.5 

 63.5 

 63.8 

 63.3 

 64.2 



Ex- 

 posed 

 eulmen. 



11.9 



12.2 



13.2 



13.1 



12 



12.2 



20 



20.3 



20.8 



20.6 



19.9 



19.9 



19. S 

 19.7 

 20.5 

 20.3 

 19. 6 

 20 



Midde 

 toe. 



1.5.9 



16.3 



16.8 



16.3 



16 



15.9 



10.2 

 16.1 

 16.9 

 16.5 

 15.9 

 16.5 



I am unable to verify, from examination of a much larger series of specimens than 

 that indicated above, alleged color differences in Florida and Bermuda examples. 

 Florida specimens have, as a rule, larger bills than others, the difference being some- 

 times conspicuous; but even were this character constant I should not be inclined to 

 consider the Florida birds as different enough to constitute a satisfactory subspecies. 



