204 SYLVIID.E. 



blackish hair-lines and streaks, like the eggs of some of the Buntings. 

 They measure -87 to -9 in length, and '6 to -65 in breadth. 



2. Lake Baikal, Siberia, 7th July Seebohm Coll. 



(Dybowski). 



3. Dauria, June (Dybowski : Tris- Crowley Bequest. 



tram Coll.}. 



Genus HYPOLAIS, Brehm. 

 Hypolais hypolais (Linn.}. 



Sylvia hypolais. Thien. Fortpflanz. ges. Vog. p. 168, tab. xix. fig. 13, a-d 



(1845-54). 



Hypolais salicaria, Baedeker, Eier Eur. Vog. tab. 19. fig. 1 (1855-63). 

 Sylvia icterina, Bree, Birds Eur. ii. p. 58 (1867). 

 Ilypolais icterina, Dresser, Birds Eur. ii. p. 521 (1874); Seebohm, Cat. 



Birds B. M. v. p. 77 (1881). 

 Hypolais hypolais, Seebohm, Brit. Birds, i. p. 381, pi. 10 (1883) ; id. 



Eggs of Brit. Birds, p. 198, pi. 52. fig. 10 (1896) ; Sharps, Hand-l. 



iv. p. 207 (1903). 



The eggs of the Icterine Tree-Warbler are of a regular oval form 

 and possess a small amount of gloss. The ground-colour varies from 

 greyish pink to pale brownish pink or salmon-pink, and is marked 

 rather sparingly with spots of deep purplish brown or black. The 

 spots on some specimens are very small, on others large, but they 

 are always well-defined. A few examples are also marked with 

 short lines and streaks, while others are covered with very fine 

 lines which run over the shell in all directions and resemble the 

 lines of a cobweb. The underlying markings are obsolete and 

 often absent. Specimens measure from -67 to -81 in length, and 

 from '51 to -56 in breadth. 



1. Boulogne, France. L. II. Sitwell, Esq. [P.]. 



5. Elbeuf, France, 4th June (Noury : Seebohm Coll. 



Hargitt Coll}. 



3. Foret de Bord, Elbeuf (Noury : Seebohm Coll. 



Hargitt Coll.}. 



3. Holland (J. Baker}. Crowley Bequest. 



5. Valkenswaard, Holland (J. B.}. Salvin-Godman Coll. 



4. Valkenswaard, 28th May (H. Seebohm Coll. 



Seebohtn). 

 16. Valkenswaard. Crowley Bequest. 



6. Pomerania (T. Krilper). Seebohm Coll. 



4. Cassel, Germany, 30th May Seebohm Coll. 



(T. Holland}. 



5. Moscow, 2nd June (Lorenz). Seebohm Coll. 



Hypolais polyglotta (Vieill). 



Hippolais polyglotta, Salvin, Ibis, 1859, p. 306 ; Tristram, torn. cit. 



p. 418. 

 Hvpolais polyglotta, Dresser, Birds Eur. ii. p. 517 (1874) ; Bree, Bir'de 



Eur. 2nd ed. ii. p. 150, pi. (1875) ; Seebohm, Cat. Birds B. M. v. 



p. 79 (1881) ; Sharpe, Hand-l. iv. p. 208 (1903). 



