226 PHYLLOSCOPINJEL 



Hypolais obsoleta, Severfz. 



Murray's Vertebrate Zoology of Sind, p. 158. 

 THE DESEKT TREE WARBLER. 



Wing, 2-4 ; tail, 2; culmen, Q'8. 



The general color of the upper parts is a sandy-brown or pale 

 Isabelline-brown ; in other respects the coloration is that of 

 the two or three preceding species or sub-species ; third and fourth 

 primaries nearly equal and longest ; second primary, in a skin 

 from Turkestan, intermediate in length between the sixth and 

 seventh, and in one from Sind between the seventh and eighth ; 

 the bastard primary exceeds the primary-coverts by 0'35 inches 

 in both skins. 



This Warbler has been procured in Sind, but is very rare. 



The following key, originally published in YoL V, Cat. Br. 

 Mus., may prove useful in discriminating the foregoing : 



A. General color of the upper parts brown or grey ; under 



parts white or pale brown ; outside tail-feathers 015 

 to 0'2 inches shorter than the longest. 

 (a) Second primary intermediate between the fifth and 

 sixth ; bastard primary falling short of the primary- 

 covert by 01 inches, or extending O'Oo J^eyond 

 them. Lengths of wing, 2'8 to 3 '05 inches. 



H. LANGUIDA. 



B. Bastard primary exceeding the primary coverts by at least 



01 inch. 



(a) General color of the upper parts sandy or isabelline- 

 brown. 



H. OBSOLETA. 



C. General color of the upper parts darkish rufous-brown 



or grey. 



(a) Second primary generally intermediate between the 



fifth and sixth ; bastard primary exceeding the pri- 

 mary coverts from 01 to 0*3 inches. Length of 

 wing, 275 to 2'5 inches. 

 H. PALLIDA. 



(b) Second primary generally intermediate between the 



seventh and eighth, or eighth and ninth ; bastard 

 primary exceeding the primary-coverts from 0*2 to 

 0*4 inches. Length of wing, 2*53 to 2*3 inches ; 

 culmen, 0'6 to 0'53. 



H. RAMA. 



(c) Second primary generally intermediate between the 



sixth and seventh; bastard primary exceeding the 

 primaryco verts 015 to 0'26. Length of wing, 2'38 to 

 2'28 inches ; culmen, 0'51 to 0'5. 



H. CALIGATA. 



GENUS, Phylloscopus, Bodd. 

 Bill very slender, small, straight, shallow, barely deflected afc 





