258 Mr. C. Chubb on Birds from [Ibis, 



Sterna fiuviatilis Naum. ; Saunders, Cat. B. Brit. Mus. 

 XXV. 1896, p. 54. 



a. ? iram, Lima, Peru, 22 June, 1913. "Iris brown; 

 bill and feet dark red ^' {Brabourne). 



Sterna lorata. 



Sterna lorata Phil. & Landb. Arch, fiir Naturg. 1863, i. 

 p. 12i: Chile; Saunders, Cat. B. Brit. Mus. xxv. 1896, 

 p. 126. 



Eleven males and one female, adult et iram. Eten, North- 

 west Peru, 10-15 metres, Sept. 1899. '^ San Josicita." 



I have compared these specimens with others from Chile 

 and Peru in the British Museum and find them to be very 

 similar. 



Rhynchops cinerascens. 



lihynchops cinerascens Spix, Av. Bras. ii. 1825, p. 80, 

 pi. 102 : " in locis ripariis flum. Amazonum.^' 



Bhynchops meJanura Swains. ; Tacz. Orn. Per. iii. 1886, 

 p. 437. 



No. 4. S' Trujillo, N.W. Peru, 11 Aug. 1912. "Iris 

 brown ; feet vermilion ; bill vermilion at base, remainder 

 black " {Brabourne). 



This example is in the fully adult summer plumage. 



Larus serranus, 

 • Larus serranus Tschudi, Archiv fiir Naturg. 1844, i. 

 p. 314: Peru; Tacz. Orn. Pt^r. iii. 1886, p. 452: Lake 

 Junin ; Callao. 



No. 1478. ? . Banos, Cajamarca, Peru, 2800 metres, 

 16 Nov. 1898. 



No. 1846. ? . Galera, Junin, Peru, 4800 metres, 

 24 Feb. 1899. 



No. 2841. ($ . Cochabamba, Bolivia, 25CO metres, 

 20 April, 1901. " Gaviata." 



All three specimens mentioned above are in fully adult 

 plumage witli black heads, entire white tails, and conspicuous 

 white semicircular eyelids. 



