512 Birds of Celebes: Turdidae. 



GENUS PETROPHILA Sw. 



These Rock-tlirushes differ from Merula in having a straight wing, not 

 incurved to fit the body, and black feet and tarsi, whereas in Merula they are 

 generally yellow or brown. The males of Petrojihila have much blue in their 

 plumage, the females are not spotted below, but marked with irregularly shaped 

 bars. Mr. Oates separates the typical Rock-thrush, Monticola, from Petrophila 

 in virtue of the short tail, the wing of the former being double the tail-length. 



4^ 211. PETROPHILA CYANUS (L.). 

 Blue Rock-thrush. 



The investigations of Dresser (Birds Eur. II, 1872, 150—163), Hume (Str. 

 Feath 1875 III, 112 — 114), Seebohm (Cat. Birds V, 1881, 316—320), Oates (B. 

 Brit. Burmah 1883 I, 11), Fauna Br. Ind. Birds 1890, II, 146, 147), W. Blasius 

 (Ztschr. ges. Orn. 1886, 99 and Ornis 1888, 603), Styan (Ibis 1887, 217; 1891, 

 334), and others, satisfactorily prove that this species embraces two remarkably 

 different extreme geographical races, which are inseparably connected with one 

 another by intermediate forms. They are: 



1. The typical Petrophila cyanus. 



For syonymy cf Seebohm 1. c. 



Diagnosis. Abdomen bhie, hke the rest of the jjlumage. 



Distribution. From S. Europe, east to China, migrating in winter to North Africa, India, 

 Ceylon, Burmah. 



2. Petrophila cyanus solitaria (P. L. S. Miill.). 



(I. Monticola solitarius (P. L. S. M.); (1) Wakl, Tr. Z. S. 1872, Vni, 63; (2) id., Tr. Z. 

 S. 1875, IX, 192; (3j Briigg., Abh. Ver. Bremen 1876, V, 66; (4) Salvad., Ann. 

 Mus. Civ. Gen. 1876, IX, 59; (V) David & Oust, Ois. Cliine 1877, 161, ph 41; 

 (5i<') Wald., P. Z. S. 1877, 696; (6) id., ib. 1878, 343, 380, 619, 949; (7) Blak. & 

 Pryer, Ibis 1878, 240; (8) Salvad., Orn. Pap. H, 1881, 418; (9) Seeb., Cat. B., 

 V, 18S1, 319; (10) A. Miilh, J. f. 0. 1882, 357; (11) H. Slat., Ibis 1883, 224; (12) 

 W. Bias., Ztschr. ges. Om. 1886, 99; (13) Styan, Ibis 1887, 217; (14) Sharpe, 

 Ibis 1888, 201; (14"'') Tacz., P. Z. S. 1888, 463; (15) W. Bias., Ornis 1888, 603; 

 (16) Sharpe, Ibis 1889, 269; (17) Everett, J. Str. Br. R. A. S. 18S9, 98; (18) 

 Whitehead, Ibis 1890, 58; (19) Steere, List B. & M. Phihpp. Is. 1890, 19; (20) 

 Salvad., Orn. Pap. Agg. 1890, 137; (21) Styan, Ibis 1891, 333; (22) Hartert, 

 J. f. O. 1891, 201; (23) Tacz., Faun. Orn. Sib. Orient. I, 1891, 321; (24) De La 

 Touche, Ibis 1892, 413; (25) Styan, Ibis 1S93, 427; (26) M. & Wg., J. f. O. 1894 

 247; (27) Grant, Ibis 1894, 509; (28) Bourns & Worces., B. Menage Exped. 

 1894, 40; (29) Everett, Ibis 1895, 23. 



b. Petrocossyphus solitarius (1) Sh. & Dress., B. Em-. 11, 141 (1871), 150—163 (1872). 



c. Cyanocincla solitaria (1) Hume, Str. F. 1875, HI, 112; (2) Hume & Dav., ib. VI, 1878, 



250, 512. 



d. Petrocincla manilla (Bodd.) (1) Tacz., B. Soc. Z. France 1879, 136. 



e. Monticola saxatilis (1) H. Slat, (nee L.), Ibis 1882, 433. 



