CIRCUS. 237 



Circus maurus (Temm.). 



Falco maurus, Thien. Fortpjlanz. ges. Vog. tab. xliv. fig. 4 (1845-54). 

 Circus maurus, Sharpe, Cat. Birds B. M. i. p. 60 (1874) ; id ed. Layard, 



Birds S. Africa, i. p. 13 (1875-84) ; id. Hand-l. i. p. 245 (1899) ; 



Nehrk. Kat. Eiersamml. p. 3 (1899). 



One egg of the Black Harrier in the Collection is pale bluish 

 white, and measures 1'9 by 1*45. Another is bluish white, mottled 

 with pale rufous; it measures 1-87 by l'f>2. 



1. South Africa. E. L. Layard, Esq [P.J. 

 1. South Africa (E. L. Layard}. Crowley Bequest. 



Circus melanoleucus (Forst.). 



Circus melanoleucus, Sharpe, Cat. Birds B. M. i. p. 61 (1874); Leqge, 

 Birds Ceylon, p. 9 (1878) ; Blanf. Fauna Brit. Ind., Birds, iii. p. 385 

 (1895); Nehrk. Kat. Eiersamml. p. 3 (1899); Sharpe, Hand-l. i. 

 p. 245 (1899). 



Strigiceps melanoleucus, Tacz. Faune Orn. Siber. Orient, p. 120 (1891). 



Of the five eggs of the Pied Harrier in the Collection, two are 

 plain bluish white, two are sparingly marked with pale rufous, and 

 one is smeared with very pale yellowish brown. They measure 

 from 1-67 to 1-72 in length, and from 1-33 to 1-47 in breadth. 



2. Amur-land, 17th May. Crowley Bequest. 

 2. Amur-land (Nehrkorn Coll.). Crowley Bequest. 

 1. Amur-land, May. Crowley Bequest. 



Circus maculosus ( Vieill.) . 



Circus maculosus, Sharpe, Cat. Birds B. M. i. p. 62 (1874) ; id. Hand-l. 



i. p. 245 (1899). 

 Circus macropterus, Scl. fy Huds. Argent Orn. ii. p. 58 (1899) ; Holland, 



Ibis, 1897, p. 168. 



The eggs of the Long-winged Harrier are plain white. No 

 specimen collected by Mr. Holland now exhibits any trace of " an 

 irregular ring of blood-red at the broad end," as mentioned by him 

 (I. c.). They measure from 1'8 to 2-03 in length, and from 1/4 to 

 1-5 in breadth. 



14. Argentine Republic, Nov. A. H. Holland, Esq. [C.]. 



Circus assimilis, Jard. $ Selby. 



Circus jardinii. Gould, Handb. Birds Austr. i. p. 60 (1865). 



Circus assimilis, Potts, Trans. New Zeal. Inst. ii. p. 52 (1869) ; Sharpe, 



Cat. Birds B. M. i. p. 63 (1874) ; North, Nests fy Eggs Austr. Birds, 



p. 1, pi. ii. fig. 4 (1889) ; Sharpe, Hand-l i. p. 245 (1899) ; Nehrk. 



Kat. Eiersamml. p. 3 (1899) ; Campbell, Nests fy Eggs Austr. Birds, 



i. p. 1 (1901). 



Th eggs of the Spotted Harrier have no gloss and are plain white. 



