1920.] Letters, Extracts, and Notes. 317 



two erytliristic clutches, also a clutch of six. A series of 

 nests and mounted specimens of materials were also shown ; 

 these were very much admired. 



Rufous Warbler {Agrobates galactodes) and Grey-backed 

 Warbler {Agrobates galactodes familiuris). A small series 

 of each ; one of the latter was taken by the late Captain F. 

 C. Selous in Asia Minor. There is apparently no character- 

 istic by which the eggs of these two closely allied species 

 could be safely separated. 



Grasshopper Warbler (Locustella navia). A very beautiful 

 series, embracing practically every known form and variety. 

 Eggs with conspicuous white ground are worthy of note. 



Savins Grasshopper Warbler {Locusletla luscinioides). Two 

 very distinct clutches of five from Hungary ; one has the 

 ground-colour almost obliterated by the fine markings, the 

 other has conspicuous white ground finely-speckled brownish 

 black. 



Cetti's Warbler (Cettia cetti). Several clutches of five 



showing great variation in colour, from rose- pink to brick-red. 



Reed- Warbler (Acrocephalas streperus). A characteristic 



series which, however, do not show^ such a pronounced 



variation as ''^ palustrls" eggs. 



Bly th's Reed- Warbler (Acrocep/ialus dwnetorum) . A clutch 

 of five from the Altai district, Central Asia. These do not 

 differ essentially from palustris eggs; they are, however, 

 generally larger and more pointed. 



Marsh-Warbler {Acrocephalas pahistris). A series of 

 British and Continental clutclies showing great variation 

 in markings and ground-colour ; one clutch has a pure 

 white ground, which is apparently rare. 



Great Reed -Warbler {Acrocephalas arundinaceus). These 

 very handsome eggs were well represented ; two clutches of 

 the Eastern form (J. orientaUs) were also shown. They do 

 not, however, differ except in size, the latter being on the 

 average smaller. 



Sedge-Warbler {Acrocephalas schcenohaenus). A series 

 which show little marked variation, which is characteristic 

 of these eggs. The conspicuously mottled form which was 

 represented is, however, worthy of mention. 



