184 LARID^. 



Two or three occurrences of this rare visitor in England 

 are on record. It inhabits the intertropical seas and coasts 

 from the "West Indies to Australia. As a straggler it 

 visits the coasts of the United States as far north as New 

 England. 



Sterna ansestheta. Scopoli's Sooty Tekn. 



Sterna Anaethetus (sic), Scopoli, Del. Faun, et Flor. 

 Ins. ii. p. 92 (1786). 



AncBstheta = dvaiaBiiros, without unclerBtanding (aluOriats), senseless. 



One was obtained off a lightship at the mouth of the 

 Thames (H. Saunders, P. Z. S. 1877, p. 43) . It inhabits the 

 intertropical seas. 



Genus HYDROCHELIDON, Boie, Isis, 1822, p. 563. 



Ht/drochelidon, from iJSiop = water, and xeXiSiiiv = a Swallow. 



Hydrochelidon hybrida. Whiskered Teen. 



Sterna hybrida, Pallas, Zoogr. Rosso-As. ii. p. 338 

 (1811). 



Sterna jeucopareia, Naum. x. p. 168; Hewitson, p. 483; 



Yarr. ed. 2, iii. p. 512; id. ed. 3, iii. p. 517. 

 Hydrochelidon leucopareia, Macg. v. p. 663; Gould, v. p. 77. 

 Hydrochelidon hybrida. Gray, p. 242; Dresser, viii. p. 315. 

 Sterna hybrida. Hurting, p. 168. 

 The Whiskered Tern, Yarr. ed. 1, iii. p. 404. 



Hybrida = a mongrel, hybrid, hecause Pallas thought it Uke a hybrid be- 

 tween i?. nigra and Sterna ~ 



A rare straggler ia the warm season to the southern and 

 eastern shores of England and Ireland. It inhabits the 

 southern Pal^arctic Region and the Oriental and Ethiopian, 

 and Australia. 



