78 CYPSELIB.E. 



Two eggs of the Siberian Spine-tailed Swift measure respectively : 

 1-22 by -75 ; 1-2 by -75. 



2. Sega, N. Mongolia (A. Rilckheil). Crowley Bequest. 



Chsetura zonaris (Shaiv). 



Plemiprocne zonaris, Scl. 8? Salv. P. Z. S. 1879, p. 531 ; Sol. $ Huds. 



Argent. Orn. ii. p. 11 (1889). 

 Qhietura zonaris, Hartert, Cat. Birds B. M. xvi. p. 476 (1892) ; 



Salv. 8f Godm. Biol. Centr.-Amer., Aves, ii. p. 373 (1893) ; Nehrk. 



Kat. Eiersamml. p. 154 (1899) ; Sharpe, Hand-l. ii. p. 91 (1900) ; 



von Ihering, Rev. Mus. Paulista, p. 255 (1900). 



The eggs of the Ringed Spine-tailed Swift in the Collection 

 measure 1-28 by -88 ; 1-27 by -88 : 1-29 by -85 respectively. 



1. Frontino, Antioquia, U.S. Colombia Salvin-Godman Coll. 



(T. K. Salmon). 



2. Colombia. Crowley Bequest. 



Chaetura pelagica (Linn.). 



Hirundo pelasgia, Thien. Fortpflanz. ges. Vog. tab. xlii. fig. 5 (1845-54). 

 Acanthylts pelasgia, Brewer, JV. Amer. Ool. pt. i. p. 108, pi. iv. fig. 51 



(1856). 

 Chaetura pelagica, Baird, Brewer # Ridyiv. N. Amer. Birds, ii. p. 432 



(1874); Hartert, Cat. Birds B. M. xvi. p. 480 (1892) ; Bendire, 



Life-Hist. N. Amer. Birds, ii. p. 177, pi. i. fig. 25 (1895) ; Nehrk. 



Kat. Eiersamml. p. 154 (1899) ; Sharpe, Hand-l. ii. p. 92 (1900). 



The eggs of the American Chimney-Swift measure from '75 to -85 

 in length, and from '49 to '55 in breadth. 



1. North America (Smiths. Inst.). Salvin-Godman Coll. 



2. North America (Henshaw Coll.). Salvin-Godman Coll. 

 (>. North America. Crowley Bequest. 



3. North America (Tristram Coll.). Crowley Bequest. 



Chaetura vauxi (Towns.}. 



Chsetura vauxi, Baird, Brewer fy Ridyw. N. Amer. Birds., ii. p. 435 

 (1874) ; Hartert, Cat. Birds B. M. xvi. p. 481 (1892) ; Salv. $ 

 Godm. Biol. Centr.-Amer., Aves, ii. p. 375 (1894) ; Bendire, Life- 

 Hist. N. Amer. Birds, ii. p. 183, pi. i. fig. 26 (1895); Nehrk. Kat. 

 Eiersamml. p. 154 (1899) ; Sharpe, Hand-l. ii. p. 92 (1900). 



The eggs of Vaux's Swift in the Collection measure respectively : 

 75 by -53 ; -77 by -53. 



2. North America. Crowley Bequest. 





