FAMILY HIRUNDINIDiE. SWALLOWS. 



265 



FAniLY HIRUNDINID/E. 



Swallows. 



Bill, small and flattened, somewhat triangular in shape; gape, very 

 wide; wings, long, usually extending beyond the tail. 



Group 1. Wing, 3 25 to 4.75 inches long. 



Bank Swallow. 



Throat aud belly, white; a band of grayish brown on the breast; upper 

 plumage, brownish gra.y. 



Bank Swallow. 



CJiiricvla riparia- 

 See No. 403. 





Underparts, brownish gray, shading into -whit- 

 ish on the belly ; upper p.nts, grayish l)rown ; 



no distinct breast band. 



Rough=winged Swaliow. 



Stelgidopteryx serripennis. 



See No. 464. 



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