160 niKTTXDIXIDiE. 



wing, primary-coverts, and quills blackish, externally glossed with 

 blue ; lower back and rump cinnamon-rufous, with a few blackish 

 shaft-lines, very indistinct ; upper tail-coverts dark blue ; tail- 

 feathers blackish, glossed slightly with blue ; lores blackish, whiter 

 at base, and surmounted by a narrow line of rufous, forming a 

 slight eyebrow, which expands into a broad neck-patch of cinnamon- 

 rufous behind the ear-coverts, which are dingy whitish washed with 

 rufous and distinctly striped with black shaft-streaks ; cheeks and 

 threat also dingy whitish, with broader blackish shaft-streaks; 

 remainder of under surface pale rufous, everywhere streaked with 

 dusky blackish shaft-lines, less marked on the vent and under tail- 

 coverts, the long ones of which end in dark blue or blue-black like 

 the upper tail-coverts ; sides of body and flanks washed with a 

 little deeper rufous ; axillaries and under wing-coverts clear rufous, 

 with scarcely any shaft-lines, the edge of the wing more distinctly 

 streaked with the latter; quills dusky below. Total length 8*4 

 inches, culmen 0'4, wing 5-15, tail 4-7, tarsus 0'65. 



Adult female. Similar to the male in plumage. Total length 

 7"5 inches, cvilmen 0'35, wing 4-75, tail 4-5, tarsus 0'55. 



Young. Duller in colour than the adult, and easily distinguished 

 by the rufescent margins to the tips of the wing-coverts and secon- 

 dary quills ; rump more coarsely striped than in the old birds ; 

 ear-coverts nearly uniform sooty brown ; rufous colour on sides of 

 hinder crown very dull and less developed than in the adults. 

 "VYing 4'35 inches. 



Ohs. H. daurica is a large form of IT. nipalensis, and has a more 

 northern habitat. The following measurements of wing are taken 

 from the specimens in the British Museum and the collection of 

 Mr. Seebohm : — 



Wing. 

 in. 



a. cS . Irtisch (Finsch^ 5-1. Mus. Seebohm. 



/3. (S . Irtisch (Fuisch) 5-0. Mus. Brit. 



y. 2 ■ Irtisch (Finsch) 5-0. Mus. Brit. 



h. c? • Daiu'ia {Dyhoivski) 5-1. Mus. Brit. 



e. 2 . Dauria {Dyboivski) 4-8. Mus. Brit. 



Hah. From the Altai Mountains extending over Western Siberia 

 from Irtisch, throughout Dauria and Amoor Land, southwards to 

 Kansu. 



a,h. S 2 ad. sk. Irtisch River, June 16. Dr. 0. Finsch [C.]. 



c, d. c^ $ ad. sk. Dauria {Dyhuioski). Warsaw Museum [E.], 



e. Juv. sk. Ussuri River. Warsaw Museum [E.j. 



Subsp. a. Hirundo nipalensis, 



Hirundo nipalensis, Hodys. Icon. ined. vi Brit. Mrs., Passcres, pi. 6, 

 no. 329 ; id. J. A. S. Beng. v. p. 780 (1836) ; id. in Gray's Zool. Misc. 

 p. 82 (1844) ; Hume ^- Davison, Str. F. 1878, p. 44 ; Hume, Str. F. 

 1879, p. 84; Scully, t. c. p. 233; Bingham, Str. F. 1880, p. 148; 

 Hume, t e. p. 246 • Oates, B. Brit. Burm. i. p. 306 (1888). 



