GYMNOEHINA. 271 



Austr. Birds, p. 59 (1889) ; Nehrk. Kat. Eiersamml. p. 68 (1899) ; 

 Campbell, Nests $ Eygs Austr. Birds, i. p. 292, pi. 11 (1901); 

 Sharpe, Hand-L iv. p. 276 (1903). 



The eggs of the White-backed Crow-Shrike are of the same 

 character, and exhibit as many types, as the eggs of G. tibicen. 

 Some specimens, however, differ from the others in being of a rather 

 deep blue colour, marked with dark umber-brown, and pale umber- 

 brown in others. Examples measure from 1'43 to 1-72 in length, 

 and from 1*04 to 1*2 in breadth. 



1. Australia. Gould Coll. 



2. Australia. Salvin-Godman Coll. 



3. Braidwood, N.S.W., Aug. (A. J. Crowley Bequest. 



North). 



1. Sydney, N.S.W. (Tristram Coll.). Crowley Bequest. 

 3. South Australia. Gould Coll. 



3. South Australia, Oct. (G. F. Angas). Gould Coll. 



2. South Australia (G. F. A.). Gould Coll. 

 5. South Australia (G. F. A.). Gould Coll. 



3. South Australia Gould Coll. 



2. South Australia. Gould Coll. 

 1. Victoria. Gould Coll. 



4. Victoria. Crowley Bequest. 



1. Gippsland, Victoria. F.A.Philbrick,Esq.,K.C.[P.]. 



3. Yendon, Victoria, 13th Aug. (A. J. Crowley Bequest. 



North). 



Gymnorhina hyperleuca (Gould). 



Gymnorhina organicum, Gould, Handb. Birds Austr. i. p. 178 (1865) ; 



North, Nests 8f Eggs Austr. Birds, p. 60, pi. vii. fig. 9 (1889). 

 Gymnorhina leuconota, Gadow, Cat. Birds B. M. viii. p. 92, part. 



(1883). 

 Gymnorhina hyperleuca, Campbell, Nests 8f Eggs Austr. Birds, i. p. 295 



(1901) ; Sharpe, Hand-l. iv. p. 276 (1903). 



The eggs of the Tasmanian Crow-Shrike are smaller than those 

 of G. tibicen and G. leuconota, and more uniform in colouring. 

 The commonest type of egg appears to be one in which the ground- 

 colour is pale greyish green, sparingly spotted and blotched with 

 dull purplish grey and brown or dark umber-brown. The edges of 

 the markings are usually hazy and run into the surrounding 

 ground-colour. In a second type, the ground-colour is dull bluish 

 green, densely clouded and mottled with dull lavender and two or 

 more shades of brown. Specimens measure from 1-4 to 1-52 in 

 length, and from 1 to 1-1 in breadth. 



1. Tasmania. Gould Coll. 



1. Tasmania. Gould Coll. 



1. Tasmania. Gould Coll. 



1. Tasmania. Gould Coll. 



1. Tasmania. Gould Coll. 

 4. Tasmania (C. Gould). Gould Coll. 



2. Tasmania. Crowley Bequest. 

 4. Tasmania ( W. H. Bignold). Crowley Bequest. 



