246 HIKUNDINIDJE. 



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 arc plain white, those of others spotted. 



Petrochelidon nigricans ( Vieill.), 



Hylochelidon nigricans, Gould, Handb. Birds Austr. i. p. Ill (18C5). 

 Petrochelidon nigricans, Shaiye, Cat. Birds B. M. x. p. 190(1885) ; id. $ 



Wyatt, Man. Hinmdinidce, ii. p. 525 (1885-94); North. Nests $ 



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



Eiersamml. p. 86 (1899) ; Campbell, Nests fy Eggs Austr. Birds, i. 



p. 456, pi. 15 (1901) ; Sharpe, 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 '5 to 

 57 in breadth. 



1. South Australia (G. F. Angus}. Gould Coll. 



2. New South Wales (Wilson). Gould Coll. 



3. New South Wales, 18th Oct. (A. J. Crowley Bequest. 



North). 



Petrochelidon pyrrhonota ( Vieill.). 



Hirundo lunifrons, Brewer, N. Amer. Ool. pt. i. p. 94, pi. v. figs. 68-73 



(1856). 

 Petrochelidon lunifrons, Baird, Brewer fy Ridyiv. N. Amer. Birds, i. 



p. 334 (1874). 

 Petrochelidon pyrrhonota, Salv. fy Godm. Biol. Ccntr.-Amer., Aves, i. 



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



Wyatt, Mon. Hirundinidce, ii. p. 531 (1885-94) ; Scl. $ Huds. Argent. 



On*, i. p. 30 (1888) ; Nehrk. Kat. Eiersamml. p. 87 (1899) ; Sharpe, 



Hand-l. 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. 



5. North America. Salvin-Godrnan Coll. 



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



5. North America. Crowley Bequest. 

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



Tristram Coll.). 

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



6. Manitoba, 5th Aug. (G. M. N. Amer. Bound. Comm. 



Duivson). 



