GTMNOEHINA. 



271 



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

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

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



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

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

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

 deep bine 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. 



The . 



character. 



Gymnorhina hyperleuca (Gould). 



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

 North, Nests $ Eggs Austr. Birds, p. GO, pi. vii. fig. 9 (1889). 



Gymnorhina leucouota, 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. 



1. Tasmania. 



1. Tasmania. 



1. Tasmania. 



1. Tasmania. 



4. Tasmania (C. Gould). 



2. Tasmania. 



4. Tasmania ( W. H. Bignold). 



Gould Coll. 

 Gould Coll. 

 Gould Coll. 

 Gould Coll. 

 Gould Coll. 

 Gould Coll. 

 Crowley Bequest. 

 Crowley Bequest. 



