POLIOrTILA. — PARISOMA. 271 



Polioptila californica, Brewster. 



Polioptila melanura, JBaird, Brewer ^- Ridyio. N. Amer, Birds, i. p. 81 



(1874). _ 

 Polioptila californica, Sharpe, Cat, Birds B. M. x. p. 451 (1885) ; td. 



Hand-l. iii. p. 242 (19U1). 



Four eggs of the Black-capped Gnatcatcher in the Collection 

 measure respectively : '62 by -48 ; '64 by "5 ; -02 by '45 ; '6 by "48. 



1. California (Smiths. Inst.). Salvin-Godman Coll. 



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



[P.]. 



Polioptila albiloris, Sd. cf- Salv. 



Polioptila albiloris, Oxcen, 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 Salviu-Godmau Coll. 

 (R. Oive7i). 



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



3. Yucatan, Crowley Bequest. 



Genus PARISOMA, Swains. 



Parisoma subcseruleuni (VieilL). 



(Plate VIII. fig. 11.) 



Parisoma subca?ruleum, Sharpe, ed. Layard's Birds S. Africa, p. 333 

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

 p. 242 (1901) ; Stark ^- Sclater, Fauna S, Africa, Birds, ii. p. 75 

 (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, Hartl. 



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

 id. Cat. Birds B. M. iv. p. 2^0 (1879) ; id. Hand-l. iii. p. 242 (1901) ; 

 Stark Sf 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. subccuruleum. They measure respectively : "72 by '52 ; 

 •71 by -52. 



2. Nels Poort, S. Africa (7". Atinore ; Crowley Bequest. 

 Tristram Coll.), 



