Note 111 — Family CYPSELIDÆ.—The Swifts.
Reading edition
Chætura cinereiventris, Scl. Cat. Am. B. 1862, p. 283; P. Z. S. 1863, p. 101, pl. xiv, f. 1; P. Z. 1866, 612. C. sclateri, Pelz. Orn. Braz. I, 1868, pp. 16, 56, is also referrible to it as perhaps a race.