MONTICOLA. — PETROPHILA. 129 



5. Politz, Pomerania (T. H). Seebohm Coll. 



4. Livonia, Baltic Provinces, 14th May Seebohru Coll. 



(JRussow). 

 4. Valkenswaard, Holland, 16th May Seebohm Coll. 



(C. B. Wharton $ H. Seebohm). 



Genus MONTICOLA, Boie. 

 Monticola saxatilis (Linn.). 



Turdns saxatilis, Thien. Fortpflanz. ges. Vog. tab. xxiv. fig, 1, a, b (1845- 



54). 

 Petrocincla saxatilis, Baedeker, Eier Eur. Vog. tab. 27. fig. 10 (1855- 



63); Heivitson, Eggs of Brit. Birds, i. p. 95, pi. xxvi. fig. ii (1856). 

 Monticola saxatilis, Dresser, Birds Eur. ii. p. 129 (1872) ; Seebohm, Cat. 



Birds B. M. v. p. 313 (1881) ; id. Brit. Birds, i. p. 281, pi. 8 (1883); 



id. Eggs of Brit. Birds, p. 186, pi. 51. fig. 4 (1896) ; Sharpe, Rand-l. 



iv. p." 144 (1903). 



The eggs of the Rock-Thrush vary in shape from a broad to a 

 narrow oval, and have a considerable amount of gloss. The ground- 

 colour is a pale delicate bluish green, either plain or marked with a 

 few small brown specks, usually on the larger end. They vary from 

 •99 to 1'13 in length, and from *7 to '81 in breadth. 



2. Vosges Mts., France (Mougel: Seebohm Coll. 



Hargitt Coll.). 



2. Vosges Mts. (Mougel: Hargitt Coll.). Seebohm Coll. 



1. Vosges Mts., 1st April (Mougel: Seebohm Coll. 



Hargitt Coll.). 



2. Pyrenees (Fairmaire). Seebohm Coll. 

 4. St. Gothard, Switzerland, 20th May. Seebohm Coll. 



2. Geneva (Tristram Coll.). Crowley Bequest. 



4. Parnassus, Greece, 25th May (H. Seebohm Coll. 



Seebohm fy T. Kriiper). 



4. Greece. Crowley Bequest. 



Genus PETROPHILA, Swains. 

 Petrophila cyanus (Linn.). 



Turdus cyaneus, Thien. Fortpflanz. </es. Vog. tab. xxiv. fig. 3, a, b (1845- 



54). 

 Petrocossyphus cyanus, Baedeker, Eier Eur. Vog. tab. 27. fig. 11 (1855- 



63) ; Dresser, Birds Eur. ii. pp. 129, 139 (1871-2). 

 Petrocincla cyanea, Tristram, Ibis, 1867, p. 89; Saunders, Ibis, 1871, 



p. 210; Bree, Birds Eur. 2nd ed. ii. p. 57, pi. (1875). 

 Monticola cyanus, Seebohm, Cat. Birds B. M. v. p. 316 (1881). 

 Petrophila cyanus, Oates, Fauna Brit. 2nd., Birds, ii. p. 146 (1890) ; 



Sharpe, Hand-l. iv. p. 144 (1903). 

 Petrophila cyana, Oates ed. Hume, Nests $ Eggs Ind. Birds, ii. p. 105 



(1890). 



Resembling the eggs of the preceding species, M. saxatilis, in 

 size and ground-colour, those of the Western Blue Rock-Thrush are 

 more easily divisible into a plain and a spotted type, and in the 

 latter the spots are more numerous. In the Museum series these 

 two types are about equally represented. 



