Species of Marsh- Warbler. 421 



tip barely indicated ; the tail is much less rounded than in 

 A.palustris, the feathers arc broader, and on one or two there 

 are obsolete cross bars as in Locustella luscinoides. Under- 

 parts white; on the breast, flanks, crissum, and under tail- 

 coverts washed with pale brownish buff; sides of the head 

 pale brownish; from the base of the bill over and behind the 

 eye a narrow dirty buff stripe. 



Culmen 07 inch, gape 0-74, wing S'O, tail 2-4, tarsus 0*85, 

 hind toe with claw 0*45, hind claw 0*22 ; first primary rather 

 broad, a trifle longer than the primary coverts, and 1-71 less 

 than the second, which is barely O'l shorter than the third 

 and about equal to the fourth, or, if any thing, a trifle less ; 

 the third primary is the longest; secondaries rather gra- 

 duated, the longest about 0*72 shorter than the longest 

 primary. 



Compared with Acrocephalus dumetorum, it has a much 

 longer and less broad wing, and is much greyer in shade of 

 coloration in the upper surface of the body ; and, besides, it 

 has a much larger first primary, and differs somewhat in the 

 arrangement of the quills ; for in A. dumetorum the first pri- 

 mary is small and narrow, about equal to or rather shorter 

 than the primary coverts, and 1'3 less than the second ; 

 second quill 0-25 shorter than the third, and about equal to 

 the fifth, the third and the fourth being about equal, the 

 third, if any thing, being the longest ; secondaries not gra- 

 duated, but even, and only 0"5 shorter than the longest 

 primary. 



Severtzoff describes a Warbler in his recently published 

 work on the Fauna of Turkestan (Turk. Jevotnie, p. 123) 

 under the name of Sylvia magnirostris, nob., which, I have 

 little doubt, is the present species, as his description agrees 

 precisely with the single specimen I have before me. He 

 states that the iris is blackish brown, the maxilla dark brown, 

 and the mandible yellowish ; legs dark brown ; and he not 

 inaptly compares it to the Garden Warbler {Sylvia horten- 

 sis) in general tone of colour of plumage. He met with it 

 frequenting the bush-covered localities at Karatau and in the 

 western portion of the Thianshan range. 



