246 HIKUKDINID^. 



Genus PETROCHELIDON, Cab. 



The eggs of the Swallows of this genus are of a regular oval 

 shape, and they exhibit a small amount of gloss. Those of some 

 species are plain white, those of others spotted. 



Petrochelidon nigricans ( Vieill.). 



Hylochelidon nigricans, Gould, Handh. Birds Austr. i. p. Ill (1865). 

 Petrochelidon nigricans, Sharpe, Cat. Birds B. M. x. p. 190(1885) ; id. 8[ 



Wyatt, Man. Sirundinidce, ii. p. 525 (1885-94) ; North, Nests 8f 



Ik/gs Austr. Birds, p. 32, pi. xiii. fig. 14 (1889) ; Nehrk. Kat. 



Biersamml. p. 86 (1899) ; Campbell, Nests 8^ Bggs Austr. Birds, i. 



p. 456, pi. 15 (1901) ; iSharpe, Hand-l. iii. p. 200 (1901). 



The eggs of the White-rumped Cliff-Swallow are of a white 

 colour, minutely speckled, chiefly at the broad end, with rufous and 

 lavender. They measure from "64 to -72 in length, and from -o to 

 •57 in breadth. 



1. South Australia [G. F. Angas). Gould Coll. 



2. New South Wales (>r27so«). Gould Coll. 



3. New South Wales, 18th Oct. (^ . /. Crowley Bequest. 



North). 



Petrochelidon pyrrhonota ( Vieill.). 



Hirundo hmifrons, Breioer, N. Amer. Ool. pt. i. p. 94, pi. v. flgs. 68-73 



(1856). 

 Petrochelidon lunifrons, Baird, Brewer S[ Ridgw. N. Amer. Birds, i. 



p. 334 (1874). 

 Petrochelidon pyrrhonota, Salv. Sf Godm. Biol. Centr.-Amer., Aves, i. 



p. 226 (1883) ; iSharpe, Cat. Birds B. M. x. p. 193 (1885) ; id. ^ 



Wyatt, Mon. Hirundinidce, ii. p. 531 (1886-94) ; Scl. Sf Huds. Argent. 



Orn. i. p. 30 (1888) ; Nehrk. Kat. Eiersamml. p. 87 (1899) : Sharpe, 



B.and-1. iii. p. 201 (1901). 



The eggs of the North- American Cliff-Swallow are white, coarsely 

 speckled and blotched with various shades of brown, chestnut, and 

 lavender. The markings are densest at the broad end. Specimens 

 measure from -75 to -85 in length, and from -53 to -57 in 

 breadth. 



6. North America. Salvin-Godman Coll. 



4. North America [Henshaw Coll.). Salvin-Godman Coll. 

 6. North America. Crowley Bequest. 



4. Rocky Mountains {D. G. Elliot : Crowley Bequest. 



Tristram Coll.). 

 4. Pembina, Dakota {Henshaw Coll.). Salvin-Godman Coll. 

 6. Manitoba, 6th Aug. (G. M. N. Amer. Bound. Comm. 



Dawson). 



