84 TUKDIDiE. 



Journ. Om. 1853, extra Heft, p. 92 ; Hartl. Orn. W.-Afr. p. 60 



(1857) ; Dresser, B. Eur. pt. xsviii. (1874). 

 Hvpolais pallida {Hemp, et Ehr.), apud L. Gerbe, Rev. et Mag. de Zool. 



■l8o2, p. 174. 

 Phyllopueuste opaca (Cab.), LicJit. Nomencl. Av. p. 30 (1854). 

 Cliioropeta pallida (Hemp, et Ehr.), apud Bp. Cat. Parzud. p. 6 



(185(3), uptid Loche, E.vpl. Sci. A/(/er., Ois. i. p. 271 (1867). 

 Hvpolais arigonis, Brehm, Ally, deutsch. tiaturh. Zeit. iii. p. 467 



"(1^5')- . - . „ . 



Ficedula cinerascens, -De Seli/s, fide Neioton, List B. Eur. Blasius, 



p. 11 (1862). 

 Hvpolai-i ciiiera-ceus, Brehm, III. Thierlehen, p. 865 (1866); De Seli/s, 



fide Deffl. et Gerbe, Orn. Eur. i. p. 506 (1857); Heiigl. Orn. N.O.- 



Afr.\.\x 297 (18G9). 

 Hvpolais fuscesceus, De Selys, fide Loche, Expl. Sci. Alger., Ois. i. 



■p. 271 (1867). 

 ? Hvpolais verdoti, Jaub. apud Loche, Expl. Sci. Alger., Ois. i. p. 276 



(1807). 



I am unable to detect the slightest difference in colonr between 

 this bird and the one previously described, of wliich I consider it to 

 be a Western form. On an average it is certainly a larger bird, 

 with a vrider and less laterally depressed bill ; but small skins from 

 Spain are indistinguishable from large skins from Asia Minor. 



The wiug foimnlti of the subspecies under consideration does not 

 differ from that of the two previously described birds, and the 

 bastard primarj- extends beyond the primaiw -coverts from 0-2 to 0-32 

 inch. Length of wing 2-75 to 2*6 inches, tail 2-3 to 2-15, culmen 

 0-71 to 0-65, tarsus 0*9 ; outside tail-feathers 0*2 inch shorter 

 than the longest. 



I have been unable to discover any differences in the plumage 

 attributable to age, sex, or season, beyond that of summer and 

 •winter abrasions. 



The Western Olivaceous Tree-Warbler is a regular summer visitor 

 to Southern Spain and Algeria, wintering in West Africa. 



a. 2 ad. sk. Malaga, Spain, July 6, 1876. Henry Seebohm, Esq. [P.]. 



b, c. Ad. sk. Tunis. L. Fraser, Esq. [C.]. 



d. Ad. sk. Morocco (Olcese). E. B. Sharpe, Esq. [P.]. 



e. Ad. sk. Tangier (Olcese). Col. Irby [P.]. 



f. c? ad. sk. Algeria (Verreau.r). Purchased. 



g. Ad. sk. Alwokuta (H. Robin). F. Nicholson, Esq. [P.]. 

 h, i. Ad. sk. Gambia River. Purchased. 



The synonymy of the Western Asiatic form is as follows : — 

 7. Hypolais rama. 



Sylvia rama, Sykes, P. Z. S. 1832, p. 89. 



P'hvllopneuste rama (Si/kes), Bli/th, Cat. B. Mus:\As. Soc. p. 183 



(1849); Horsf. S,- Moore, Cat. B. Mus. E.I. Co. p. 335 (1854); 



Jerd. B. hid. li. p. 189 (186.3). 

 Hypolais rama (Sgkes), Blanf. East. Persia, ii. p. 187 (1876). 



This subspecies is a shade darker in colour, both above and below, 

 than typical H. pallida. It is on an average a somewhat smaller 



