. Birds. Birds. HYDBOPKOeifB. 309 Bill livid red in sumtner, reddish black in winter and in young birdy ; irides dark brown ; legs vermilion. Length 9-5; tail 2*8; wing 8 25; tarsus '75; bill from gape 1-3. Distribution, Temperate Europe and Asin, south of ]°]Sr., in summer, Africa to Australia in winter. This Tern has not been clearly identified from any part of India west of Tipperah, whence a specimen was sent to Mr. Hume, but it has been several times shot in Ceylon; Gates found it common at the mouth of the Sittang, in Burma, and a skin was sent from South Andaman by Mr. de Eoepstorf
. Birds. Birds. HYDBOPKOeifB. 309 Bill livid red in sumtner, reddish black in winter and in young birdy ; irides dark brown ; legs vermilion. Length 9-5; tail 2*8; wing 8 25; tarsus '75; bill from gape 1-3. Distribution, Temperate Europe and Asin, south of ]°]Sr., in summer, Africa to Australia in winter. This Tern has not been clearly identified from any part of India west of Tipperah, whence a specimen was sent to Mr. Hume, but it has been several times shot in Ceylon; Gates found it common at the mouth of the Sittang, in Burma, and a skin was sent from South Andaman by Mr. de Eoepstorff. Genus HYDROPEOGNE, Kaup, 1829. This is a genus of Terns distinguished by its stout and long beak and legs, and by its very short tail, only about one-third the length of the wing. There is only a single species, which is the largest Tern known. 1498. Hydroprogne caspia. The Caspian Tern. Sterna caapia, Pall. Nob. Comm. Petrop. xiv, i, p. 682, tab. xxii, fig. 2 (1770); Hume, S. F. i, p. 280; Oates, S. F. iii, p. 347; id. Cat, no. 982; Legge, Birds Ceyl. p. 1008; Butler, 8, F, ix, p. 439; Parker, ibid, p. 487 ; Davidson, S. F. x, p. 326; Oates, B. B, p. 427 ; Barnes, Birds Bom. p. 428; Oates in Sume's N, Sf E, 2nd ed. iii, p. 295. Hydroprogne caspia, Kaup, Natiirl, Syst, pp. 91, 196; Saunders, Cat. B. M, XXV, p. 32. Sylochelidon caspius, Brehm, Vog, Deutschl, p. 770; Blyth, Cat, p. 290; Jerdon, B. I. iii, p. 835; King, J. A. S. B. xxxvii, pt. 2, p. 218; Holdsworth, P. Z. S. 1872, p. 480; Hume, S. F, iv, p. 414. The Largest Tern, Jerdon; Kekra, Fig. 71.—Head of H. caspia. Coloration, In summer plumage the forehead, crown, nape, and sides of head to below the eye black glossed with dark green; remainder of upper plumage, with wings, pearl-grey; the inner webs of the primaries (and the outer webs, when the frosted surface has worn off) darker; rump and tail still paler; lower plumage with sides, and sometimes back, of neck, cheeks, and lower lores pure Please no
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