Catalogue of the Birds of Illinois. 
185 
Order CYPSELI. 
Family CYPSELID^E.— Swifts. 
Genus Centura, Stephens. 
*154. C. pelasgica (Linn.) Baird. Chimney Swift. Summer sojourner. 
Usually known as the “Chimney Swallow.” 
Order CAPRIMUL.GI. 
Family C APPJMULGID M. —Goatsuckers. 
Genus Antrostomus, Gould. 
*155. A. carolinensis (Gmel.) Gould. Chuck- will’s- widow. Summer 
sojourner in southern counties. Confounded with the following, but note louder 
and less hurriedly enunciated; habits the same. 
Genus Caprimulgus, Linnaeus. 
*156. C. vociferus, Wils. Whip-poor-will. Summer sojourner. 
Genus Chordeiles, Swainson. 
// *157. C. popetue (Vieill.) Baird. Night Hawk. Summer sojourner. Pop- 
ularly supposed to be the whip-poor-will, but readily distinguishable on sight 
by the conspicuous white wing-spot, its partially diurnal habits, and other well- 
marked characteristics.* 
Order PICI. 
Family PICLDiE. — Woodpeckers. 
Genus Campephilus, Gray. 
*158. C. principalis (Linn.) Gray. Ivory-billed Woodpecker. A former 
resident in the extreme southern counties, but now extinct in many districts. 
Genus Picus, Linnaeus. 
0 *159. P. villosus , Linn. Hairy Woodpecker. Resident; commonly known 
as the “Big Sapsucker,” or “ Guinea Woodpecker.” 
_ *160. P. pubescens , Linn. Downy Woodpecker. Resident. The well- 
known “Little Sapsucker,” or “Little Guinea Woodpecker.” 
*Mr. Nelson (p. 114) gives “ var. lienryi, Cass.,” as occurring and breeding in Cook 
county. We have, in conjunction with Mr. Nelson, compared the specimens inferred 
to, with typical examples of the western form, and conclude that they are merely 
somewhat pale examples of the eastern bird, or true popetue, as restricted. 
D 
