P0LTB0EP8. 



233 



Tolyborus cheriway, Sharpe, Cat. Birds B. M. i. p. 33 (1874) ; Scl. ^ 

 Salv. P. Z. S. 1879, p. 542 ; Bendire, Life-IIist. N. Amer. Birds, i. 

 p. 315, pi. xi. figs. 1-4 (1892) : Sharpe, Hand-l. i. p. 243 (1899) ; 

 Nehrk. Kat. Eiersamml. p. 2 (1899). 



The eggs of Audubon's Caracara are not separable from those 

 of P. tharus. The specimens in the Collection measure from 2'1 to 

 2"35 in length, and from 1'75 to 1"85 iu breadth. 



1. Kio Attaskosa, Texas, 7th May Crowley Bequest. 



(//. K Dresser). 



1. Rio Medina, 'Jexas (if. E. D.). Salvin-Godman Coll. 



1. Texas {Smiths. Inst.). Salvin-Godman Coll. 



1. San Antonio, Texas. Crowley Bequest. 



1. Matagorda, E. Mexico ( T. M. Brewer). Crowley Bequest. 



2. San Geronimo, Guatemala, 2nd April Salvin-Goduian Coll. 



{R. Oiom). 

 2. San Geronimo, April {R. O.). Salvin-Godman Coll. 



2. Kio Negro, Antioquia, U.S. Colombia Salvin-Godman Coll. 



(7*. K. Salmon). 



Genus IBYCTER, Vieill. 



Ibycter megalopterus {Meyen). 



Ibycter megalopterus, Sharpe, Vat. Birds B. M. i. p. 36 (1874); id. 

 Hand-l. i. p. 244 (1899). 



The sole egg of the Large-winged Carrion-Hawk in the Collection 

 is of a very regular oval shape, smooth, and very slightly glossy. 

 It is cream-coloured, speckled and spotted all over with chocolate- 

 brown except at the broad end, where the markings form a dense 

 confluent cap. It measures 1*85 by 1-45. 



1. Chile. Crowley Bequest. 



Ibycter australis (Gm.). 



Milvago leucurus, Gould, P. Z. S. 1859, p. 93. 



Milvago australis, Scl. Ibis, 1860, p. 25, pi. i. figs. 1 & 2 ; Abbott, Ibis, 



1861, p. 150; Scl. Zool. '■Challenger^ Exped. ii. pt, viii. p. 150 



(1880). 

 Ibycter australis, Sharpe, Cat. Birds B. M. i. p. 38 (1874) ; id. Hand-l. 



i. p. 244 (1899) ; Nehrk. Kat. Eiersamml. p. 2 (1899). 



The eggs of the Southern Carrion-Hawk resemble those of 

 Polyhorus tharus and P. cheriway so closely as to require no separate 

 description. One specimen, however, is abnormal, being nearly 

 spherical in shape and of a cream-colour, very sparingly mottled 

 with pale rufous. It measures 1-6 by 1'45. Normal examples 

 measure from 2-35 to 2'65 in length, and from 1-85 to 1-92 in 

 breadth. 



2. Falkland Islands. Voy. H.M.S. ' Challenger.' 



3. Falkland Islands ( C. C. Abbott). Salvin-Godman Coll. 

 5. Falkland Islands (C. C. .4.). Gould Coll. 



2. Falkland Islands, Oct. (C. C. A.). Crowlev Bequest. 



