POLIOPTILA. PAR1SOMA. 271 



Polioptila californica, Brewster. 



Polioptila melanura. Baird, Brewer & Ridyw. N. Amer. Birds, i. p. 81 



>( J874). _ 



Polioptila californica, Sharpe, Cat. Birds B. M. x. p. 451 (1885) j id. 

 lland-L iii. p. 242 (1901). 



Four eggs of the Black-capped Gnatcatcher in the Collection 

 measure respectively : -62 by -48 ; -64 by -5 ; -62 by -45 ; -6 by -48. 



1. California (Smiths. List.}. Salvin-Godman Coll. 



4. San Diego, California, 4th May. W. Radcliffe Saunders, Esq. 



[P.]. 



Polioptila albiloris, Scl. fy Salv. 



Polioptila albiloris, Owen, Ibis, 1861, p. 61, pi. ii. fig. 3 ; Salv. $ Godm. 

 Biol Centr.-Amer., Aves, i. p. 53 (1879) ; Sharpe, Cat. Birds B. M. 

 x. p. 454 (1885) ; Nehrk. Kat. Eiersamml. p. 26 (1899) ; Sharpe, 

 Hand-L iii. p. 242 (1901). 



The eggs of the Guatemalan Gnatcatcher measure from '52 to *6 

 in length, and from -42 to *5 in breadth. 



4. Chaucus, Vera Paz, Guatemala Salvin-Godman Coll. 

 (R. Oiven). 



2. Yucatan (Nehrkorn Coll.). Crowley Bequest. 



3. Yucatan. Crowley Bequest. 



Genus PARISOMA, Swains. 



Parisoma subcaeruleum ( Vieill.). 



(Plate VIII. fig. 11.) 



Parisoma subcreruleum, Sharpe, ed. Bayard? 8 Birds S. Africa, p. 332 

 (1875-84); id. Cat. Birds B. M.iv. p. 268 (1879); id. lland-L iii. 

 p. 242 (1901) ; Stark % Sclater, Fauna S. Africa, Birds, ii. p. 76 

 (1901). 



The eggs of the Red-vented Flycatcher in the Collection are of an 

 ordinary oval shape and slightly glossy. They are white, speckled 

 and spotted, chiefly in the form of a zone round the broad end, with 

 umber-brown, ashy-brown, and lavender. They measure respec- 

 tively : -67 by -51 ; -72 by -55. 



2. South Africa. E. L. Layard Esq. [P.]. 



Parisoma layardi, Ifartl. 



Parisoma layardi. Sharpe, ed. Bayard's Birds S. Africa, p. 334 (1875-84) ; 

 id. Cat. Birds B. M. iv. p. 270 (1879) ; id. Hand-l. iii. p. 242 (1901) j 

 Stark 4- Sclater, Fauna S. Africa, Birds, ii. p. 76 (1901). 



The eggs of Layard's Flycatcher in the Collection are very similar 

 to those of P. subcceruleum. They measure respectively : *72 by '52 ; 

 71 by -52. 



2. Nels Poort, S. Africa (T. Atmore; Crowley Bequest. 

 Tristram Coll.). 



