572 MESSRS. SCLATER AND SALVIN [Julie 20, 



Coues, and are therefore S. antillarum as understood by that author, 

 and fully described I. c. Besides its black point, the bill is shorter 

 and not so deep as in S. superciliaris. 



So far as we know, this species does not go further south than 

 the West-Indian seas. 



10. Sterna exilis. 



Sterna exilis, Tsch. F. P. Aves, p. 306; Sclat. P. Z. S. 1867, 

 p. 336 et p. 344. 



Sterna lorata, Ph. et Landb. Wiegm. Arch. 1863, pt. 1, p. 124. 



Hab. Coast of Peru, near Lima (Nation) ; Arica (Frobeen) ; coast 

 of Chili (Mus. Brit.). 



Sclater has already expressed his doubts as to whether S 1 . exilis of 

 Tschudi is really applicable to the present species. Tschudi's descrip- 

 tion is manifestly talcen from a young bird ; and all that can be said is 

 that it is more probably applicable to this species than to any other. 



There can be no doubt that this Tern is the £. lorata of Messrs. 

 Philippi and Landbeck, as their description accords in every respect 

 with our specimen from Lima. 



Genus 5. Gelochelidon, Brehm. 

 1. Gelochelidon anglica (Mont.). 



Sterna anglica, Mont. Orn. Diet. Suppl. ; Max. Beitr. iv. p. 867. 



Gelochelidon anglica, Coues, Ibis, 1864, p. 389; Salvin, Ibis, 

 1866, p. 199; Gundl. Repert. F. N. i. p. 392. 



Sterna aranea, Pelz. Orn. Bras. p. 325 ; Burm. Syst. Ueb. iii. 

 p. 452; Baird, B. N. A. p. 859. 



Hab. Coast of Cuba (Gundlach) ; Trinidad (Leotaud) ; Pacific 

 coast of Guatemala (Salvin) ; coast of Brazil (Max.) ; Kio Janeiro 

 (Natt.). 



This well-known species ranges down as far south as the coast of 

 Southern Brazil, whence we have received specimens collected by 

 Mr. Rogers. 



Genus 6. Onychoprion, Wagler. 



1. Onychoprion fuliginosus. 



Sterna fuliginosa, Gm. S. N. i. p. 605 ; Baird, B. N. A. p. 861 ; 

 Sund. Ofv. af K. V. A. Forh. 1869, p. 589. 



Hydrochelidon fuliginosa, Gosse, B. Jam. p. 433. 



Haliplana fuliginosa, Coues, Ibis, 1864, p. 392 ; Salvin, Ibis, 

 1866, p. 200 ; Gundl. Rep. F. N. i. p. 393. 



Sterna luctuosa, Ph. et Landb. Wiegm. Arch. 1866, pt. 1, p. 126. 



Hab. West Indies, Cuba (Gundl.); Jamaica (Gosse); Belize 

 (Salvin) ; coast of Chili (Ph. et Landb.). 



2. Onychoprion panayensis. 



Sterna panayensis, Gm. S. N. i. p. 607. 



Haliplana panayensis, Salvin, Ibis, 1864, p. 381, et 1866, p. 199. 



Haliplana panaya, Coues, Ibis, 1864, p. 391. 



