Vol. XX xi.] 36 



Mr. Stuart Baker also described a new subspecies of 

 Warbler, which he proposed to call 



ACANTHOPNEUSTE TROCHILOIDES HARTERTI, Subsp. 11. 



This subspecies differs from A. t. trochiloides in its some- 

 what smaller size, the wings of the males varying from 53 

 y.« to 56 mm. and those of the females from 50 to 55 mm. as 

 '^ I against 57 and 63 mm. in A. t. trochiloides (Hartert, Vog. pal. 



Faun. i. p. 522). In general coloration this new subspecies is 

 somewhat darker and brighter, the yellow bars on the wing 

 are more developed and of a deeper tint, and the white on 

 the outer webs of the two outermost pairs of rectrices of 

 much greater extent. In A. t. trochiloides the white is 

 generally confined to a very narrow edging and tip, and is 

 often not to be seen at all on the penultimate pair ; in 

 A. t. harterti the white often covers nearly the whole of the 

 outer webs of the outermost pair and sometimes the greater 

 part of the penultimate pair. The wing-formula is the same 

 as in A. t. trochiloides, the second primary being inter- 

 mediate in length between the eighth and tenth, generally 

 equal to the tenth. 



Hah. Assam Hills, 4000-6000 feet. 



Types in the Tring Museum : ^J ? . Peak near Shillong, 

 Khasia Hills, 13. vi. 08. E. C. Stuart Baker coll. 



Obs. This is a small local form of A. t. trochiloides which 

 I discovered breeding in the Khasia Hills at an elevation 

 between 4000 and 6000 feet. Surprised at finding a bird of 

 normally high elevations, of 9000 feet upwards, breeding so 

 low dowai, I trapped a number on their nests and was at 

 once struck by their small size and dark coloration. 



On my arrival in England last year I compared my birds 

 with a series of ^. t. trochiloides in the Tring Museum and 

 then found the above differences to exist, and my conclusions 

 have been confirmed this year by comparison with additional 

 material. 



This bird is a very common breeding species in the Khasia 

 Hills and makes a beautiful egg-shaped nest of brilliant 



