176 LAEID^. 



Immature. The grey of the crown and nape tinged with brownish ; 

 wing-coverts and long inner secondaries dark brown, tipped with 

 white ; primaries sooty on both webs adjoining the shafts, and white 

 on the remainder of the inner webs; the extreme tips white, 

 increasingly so on the inner primaries, untU at the 7th the whole 

 terminal portion is white ; taU-feathers with a broad subterminal 

 blackish band, which diminishes from the outer rectrices till lost 

 with the increasing age of the bird. Practically the duration of 

 the immature stage is very short, the primaries with dark under- 

 sides being assumed in the second autumn. 



Young. Feathers of the crown, nape, and upper surface generally 

 dark umber-brown, with white or buffish-grey tips ; the grey feathers 

 gradually appearing in the middle of the back ; otherwise like the 

 immature stage : bill brownish ; tarsi and toes dull flesh-colour in 

 the living bird. 



Hob. Lacustrine and marshy districts of subarctic and temperate 

 Europe in summer, and southward to the Mediterranean Basin in 

 winter ; temperate Asia as far as the mouth of the Amoor and the 

 sea of Okhotsk, but not in Mongolia or China. Fortuitously in 

 Northern India (once) ; Fseroe Is. (once) ; New York State (once). 



«. Ad. St. Great Britain (TF7MYeZfy). Purchased. 



b. Juv. sk. Devonshire. Col. Montagu [P.]. 



c. Ad. sk. Torquay, winter (E. Saunders). H. Saimders Coll. 



d. Juv. Bk. Freshwater, I. of Wight, Dec. 20th H. Saunders Coll. 



(Itof/ers). 



e. Juv. St. Brighton, winter. F. Bond, Esq. [P.l. 

 /. Ad. St. Essex coast, winter. F. Bond, Esq. [P.J. 



q. Ad. sk. Leadenhall Market, Oct. H. Saunders Coll. 



X. Ad. sk. Whitbm-n, CO. Durham, Dec. 26th. Hume Coll. 



i. Juv. sk. Near Aberdeen, Aug. (Snuill). H. Saunders CoU. 



k. Juv. sk. Nalsoe, Fferoes, Feb. 11th (ZT. L. Col. H. W. FeUden 



Miiller). [P.]. 



I. S ad. sk. Havre, Feb. 28th {V. Pluche). H. Saunders Coll. 



m, n. Juv. sk. Trieste, Jan. 28tb, 1868 {R.R.H. H. Saunders Coll. 



the Prittce of Wales). 



0. Ad. sk. Corfu, winter. Col. Portloek [P.]. 



p. 2 ad. sk. Alexandria, Feb. 28th ((?. E. S.). Shelley Coll. 



q, r. c? $ ad. Sarepta, Volga, April-May Hume Coll. 



sk. (MoescMer). 



s,t.S 2 ad. sk. Lake Ladoga, North Russia, May Salvin-Godman Coll. 



& June ( W. Meves). 



u. (S ad. sk. Lake I>adoga, June ( W. M.). H. Saunders CoU. 



V. S ad. sk. Lake Onega, June {Schliiter). Hume Coll. 



10. J juv. sk. Totloh, river Ob, Aug. 18th. Dr. 0. Finsch [0.]. 



X. Sternum. M. Lefebvre [C.]. 



2. Larus ichthyaetus. 



Gavia ridibunda phsenicopos, S. G. Gm. Reise Russl. i. p. 152, pis. xxx. 



& xxxi. (1770). 

 Larus ichthyaetus. Pall. Reis. Muss. Reichs, ii. p. 713 (1773 : Caspian) ; 



P. L. S. Miiller, Syst. Nat., Anhang, p. 108 (1776) ; Gm. S. N. 



i. p. .599 (1788) ; Lath. hid. Orn. ii. p. 811 (1790) ; Bonn. Enc, 



Meth. i. p. 85 (1790) ; Pall. Zoogr. Rosso-Asiat. ii. p. 322, tab. Ixxvii. 



