416 
Mr. H. E. Dresser’s Notes on 
852. Sterna minuta, L. ; Severtzoff, p. 70. 
Horizontal range. Breeds in districts III. and IY. 
Vertical range. Breeds in districts 1 and 2. 
353. Hydrochelidon nigra (L.). 
Hydrochelidon niger, Severtzoff, p. 70. 
Horizontal range. Breeds in districts I., II., and III. 
Vertical range. Breeds in district 1. 
354. Hydrochelidon hybrida (Pall.). 
Hydrochelidon leucopareius, Severtzoff, p. 70. 
Horizontal range. Breeds in district III. 
Vertical range. Breeds in district 1. 
355. Cygnus olor (Gm.), Severtzoff, p. 70. 
Horizontal range. Breeds in districts I. and III. 
Vertical range. Breeds in districts 1 and 3. 
356. Cygnus musicus, Bechst.; Severtzoff, p. 70. 
Horizontal range. Occurs on passage and in winter in dis¬ 
tricts I., II., III.; breeds early in district III. 
Vertical rauge. Occurs in winter and on passage in districts 
1, 2, and 3. 
357. Cygnus altumi, Homeyer; Severtzoff, p. 70. 
Horizontal range. Occurs on passage and in winter in dis¬ 
tricts I., II., and III., everywhere rare. 
Vertical range. Occurs rarely on passage in district 1, and 
rarely also in winter in districts 2 and 3. 
358. Anser middendorffi, Severtzoff, pp. 70, 149. 
Horizontal range. Occurs on passage in districts I. and II., 
and winters in district III. 
Vertical range. Occurs on passage in districts 1, 2, and 3, 
and winters in district 2. 
At page 149 Dr. Severtzoff writes as follows:—“ Anser 
middendorffi , nob. This Goose, which Middendorff discovered 
in North-eastern Siberia, was described by him under the 
name of Anser grandis, Pall.; but I have renamed it, as Mid- 
dendorff’s specimens agree precisely with mine from Tur¬ 
kestan, and are specifically distinct from Anser grandis of 
