FAMILY HIRUNDINIDA. — SWALLOWS. 265 
FAMILY HIRUNDINIDA:. 
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. 
\ 
\\ 
uN 
MN 
\N 
oy 
i) 
Bank Swallow. 
‘Throat and belly, white; a band of grayish brown on the breast; upper 
plumage, brownish gray. 
Bank Swallow. 
Clavicola riparia. 
See No. 463. 
Underparts, brownish gray, shading into whit- 
ish on the belly ; upper parts. grayish brown ; 
no distinct breast band. 
Rough-winged Swallow. 
Stelgidopteryx serripennis. 
See No. 464. 
