GUIKACA. 157 



somewhat glossy. They are bluish-green, mottled and blotched 

 with greyish-brown and pale underlying grey. They measure from 

 93 to 1-08 in length, and from -68 to -71 in breadth. 



One of the eggs among those from Los Angeles appears to belong 

 to another set. It is altogether smaller than the rest and has the 

 ground-colour much bluer and the spots rounder and more sharply 

 defined. 



1. North America (Smiths. Inst.). Salvin-Godman Coll. 



3. Fort Dufferin, Manitoba. 14th N. Ainer. Bound. Comm. 



June (G. M. Dawson). 



'2. Western California ( R. Ridgway : Crowley Bequest. 



Tristram Coll.). 



6. Los Angeles, California, 28th May. W. Radcliffe Saunders, Esq. 



[P.]. 



Genus GUIRACA, Swains. 



Guiraca caerulea (Linn.). 



Guiraca caerulea, Baird, Brewer 8f Ridgw. N. Amer. Birds, ii. p. 76 

 (1874) [part.] ; Salv. $ Godm. Biol. Centr.-Amer., Aves, i. p. 344 

 (1884) [part.] ; Sharpe, Cat. Birds B. M. xii. p. 66 (1888) [part.] ; 

 Nehrk. Kat. Eiersamml. p. 104 (1899) : Sharpe, Hand-l. v. p. 202 

 (1908). 



Guiraca cserulea coerulea, Rid</io. Birds North & Middle Amer. i. p. 607 

 (1901). 



Eggs of the Blue Grosbeak are of an oval form, slightly glossy, 

 and of a plain light blue colour. They measure from '9 to '96 in 

 length, and from -66 to 7 in breadth. 



1. North America. W. Radcliffe Saunders, Esq. 



[P.]. 



2. Charleston, S. Carolina, 28th W. Radcliffe Saunders. Esq. 



May. [P.]. 



4. Savannah, Georgia, 20th May W. Radcliffe Saunders, Esq. 

 (T.D. Perry). [P.]. 



Guiraca lazula (Less.). 



Guiraca cserulea lazula, Ridgw. Birds North fy Middle Amer. i. p. 610 



(1901). 

 Guiraca lazula, Sharpe, Hand-l. v. p. 202 (1908). 



Eggs of the Western Blue Grosbeak are indistinguishable from 

 those of G. ccerulea. 



1. Los Angeles, California, June. W. Radcliffe Saunders, Esq. 



L J* 



2. Mexico. Old Collection. 



2. Mexico. Salvin-Godman Coll. 



2. Mexico. Gould Coll. 



