86 TURDIDih;. 



Idunacaligata (Licht.), Gray, fide Bp. Consp. i. p. 295 (1850); Fiitsch, 



Vciff. Eur. p. 161 (1870). 

 Sylvia (Iduna) salic&ria. (Linn. ),apud Kaum. Vog. Deutschl, KnW&n^, 



p. 78 (1860). 

 Phyllopneuste rama (Si/Jces), apud Jerd. B. Ind. ii. p. 189 (1863, 



partivii). 

 Hypolais caligata (Licht.), Deql. et Gerhe, Orn. Eur. i. p. 510 (1867) ; 



Dre-t.^er, B. Eur. pt. xxxviii. (1875); Dresser, Ibis, 1876, p. 88. 

 Jerdonia agricolensis, Hume, Ibis, 1870, p. 182. 

 Calamodyta agi-icolensis {Hume), Tristran}, Ibis, 1870, p. 494. 

 Salicaria brevipeuiiis. Severtz. Turkest. Jevotn. pp. 66, 127 (1873) ; 



Dresser, His, 1876,' p. 83. 

 Salicaria pallida (Eversm.), Severtz. Turkest. Jevotn. pp. QQ, 129 (1873, 



nee Elirvnb.) ; Dresser, Ibis, 1876, p. 87. 

 Salicaria microptera, Severtz. Stray Feath. iii. p. 425 (1875). 

 Lociistella salicaria (Linn.), apud Tacz. Bull. Soc. Zool. France, 1876, 



p. 139. 



This subspecies is slightly smaller than the preceding, but with 

 the longer second primary and the shorter bastard primary of the 

 more western races. 



In colour it does not differ from the bird last mentioned. The 

 third, fourth, and fifth primaries are nearly equal and longest ; the 

 second primary is usually intermediate in length between the sixth 

 and seventh, but it is frequently only as long as, and occasionally 

 shorter than, the seventh ; the bastard piimary exceeds the primarv- 

 coverts by 0-26 to 0-15 inch. Length of wing 2-38 to 2-28 inches, 

 tail 1-95 to 1-8, culmen 0"ol to Q-o, tarsirs 0-85 ; outside tail- 

 feathers 0-1 to 1-5 inch shorter than the longest. 



The slight changes of plumage in this subspecies are the same as 

 those of the preceding. 



The Booted Tree- Warbler breeds in Cashmere, Turkestan, and 

 Southern Siberia, probably ranging eastwards as far as the Lena. 

 It winters in the plains of India. A solitary individual has been 

 captured on Heligoland ; otherwise I have never seen a European 

 specimen. 



a. Ad. sk. Behar. B. H. Hodgson, Esq. [P.]. 



h. Ad. sk. Nepal. B. H. Hodgson, Esq. [P.]. 



(Type of Hypolais swainsoni, Hodgson.) 



c. Ad. sk. North-west India. Capt. Stackbouse Pinwill [P.], 



d. Ad. sk. North-west India. R. B. Sharpe, Esq. [P.]. 



e. Ad. sk. INIadras. T. C. Jerdon, Esq. [P.J. 

 f. Ad. sk. Russia. Dr. Brandt. 



The synonj-my of the desert form is as follows : — 

 9. Hypolais obsoleta. 



Salicaria obsoleta, Severtz. Turkest. Jevotn. pp. 66, 129 (1873); 

 Dresser, Ibis, 1876, p. 87. 



This subspecies is a desert form of H. rama or H. caJigaia, 

 possibly of both. The general colour of the upper parts is a sandy 



