1. nYDROCHELIDON. 



9 



underparts, iucluding the uuder wing-coverts and axillaries, become 

 white, the crown of the head and the nape being merely mottled 

 with black ; but by the following April the black colour has re- 

 appeared to a considerable extent, especially on the axillaries. See 

 specimen from the Andaman Islands, April 16th. 



Immature. In birds which are not mature, though capable of 

 breeding, the black of the underparts has a brownish tinge and the 

 tail-feathers are pearl-grey, especially towards the tips. In winter, 

 like the adult. 



Youn;/. Similar to the winter plumage of the somewhat immature 

 bird, but much mottled with dark brown on the upper parts, and 

 the tail-feathers slightly darker grey with a brownish tinge towards 

 the tips ; upper tail-coverts always white. 



Nc'iilinf/. lluddy fawn-colour, mottled with black above, unspotted 

 pale cinnamon-brown below. 



JIab. Central and Southern Europe in summer, to about 55° N. 

 on migration ; eastward across temperate Asia to China (but not 

 to Japan) ; soutliward in winter to Australia, New Zealand, and all 

 Africa ; once in Barbados ; once in Wisconsin. 



a. (S ad. sk. 



b. 2 vLx ad. sk. 



c. d. Ad. St. 

 e,A U- d ad. sk. 



h, i. S 2 ad. sk. ; k. 

 Pull. sk. ; /. Juv. 



St. 



m. Jut. sk. 



»', 0. d $ ad. sk. 



l^. 5 ad. sk. 



q. Ad. sk, 



r. Iinm. sk. 

 s. 2 imm. sk. 

 t, u. 2 juv. St. 



V. Juv. sk. 

 iv. cf juv. sk. 



.V. 2 juv. sk. 



t/. .luv. sk. 



=. c? juv. ; a'. Ad. 



sk. 

 b', c', d'. Juv. sk. 



e'. Juv. sk. 

 /'. 2 imm. sk. 



Albufera de Valencia, E. 



Spain, July {H. Martin). 

 Mallorca, Balearic Islands, 



May (H. S.). 

 Italy. 

 Hungary, April, May. 



"Volga, June, July, August 

 {H. Moschler). ' 



Egypt (G. K S.). 

 Damietta, Egypt, April 



(Ftlipponi).' 

 Faioum, Egypt, May 31 



(J. II. Gtirneii). 

 Mogador, Marocco, May. 



Gambia. 



Katenbella, Benguela, Xov. 



Omaubonde, Damaraland (C. 

 J. Andersfion). 



Cape Colony {E. L. Laijard). 



Transvaal, Dec. {T. E. Buck- 

 ley). 



Potchefstroom, Transvaal, 

 Nov. 24 {T. Ayres). 



Loopsprit, Transvaal, Dec. 

 (T.A.). 



Potchefstroom, Transvaal, 

 Nov., July (T. A.). 



Nyasaland, Dec. 



Zambesi. 



Lamu, E. Africa, 2° 25' S. 

 {F. J. J.). 



II. Saimders Coll. 



H. Saunders Coll. 



Purchased. 

 Hungarian Nat. Mus. 



[R]. 

 H. Saunders Coll. 



Shelley Coll. 

 Shelley Coll. 



SheUey Coll. 



C. A. Payton, Esq. 



[P.]. 

 Gov. Kendall [C.]. 

 Monteiro Coll. 

 H. Saunders Coll. 



H. Saunders CoU. 

 H. Saunders Coll. 



H. Saunders Coll. 



II. Saunders Coll. 



J. H. Gurney, Esq. 



[P.]. 

 H. H. Johnston, Esq., 



C.B. [P.]. 

 Dr. Bradshaw [C.]. 

 F. J. Jackson, Esq. 



[P.]. 



