2. PHAETHUSA. 23 



y', Juv. sk. Mazatlan, N.-West Mexico H. Saunders Coll. 



{Grayson). 

 r'. Juv. sk. Acapulco, Sept. 1888 {Mrs. Salvin-Godman Coll. 



H. H. Smith), 

 s', t'. $ ad. ; u'-w'. Cay Dolores Channel, Brit. Salvin-Godman Coll. 

 cJ 2 imm. sk. Honduras, May 17, 1862 



(O. Sail-in). 

 x'. Juv. sk. Coban, Vera Paz, Nov. Salvin-Godman Coll, 



(O.S.). 

 y'. Imm. sk. Callao Bay, 12= S., Peru II. Saunders Coll. 



{R. li. Ju7np). 



2. PHAETHUSA. „ „ 



Type. 



Phaethusa, Watjler, Isis, 1832, p. 1224 P. magnirostris. 



Thalassites, Swains. Classif. B. ii. p. 373 (1837) P. magnirostris. 



Raivje. South America, from the Orinoco to the La Plata, and 

 also on the Pacific coast. 



1. Phaethusa magnirostris. 



? Simple Tern, Lath. Gen. St/n. iii. pt. 2, p. 3-55 (1785 : Cayenne) ; 



id. Gen. Hist. x. p. Ill (1824). 

 ? Sterna simplex, G/n. S. N. i. p. 606 (1788) ; Lath. Ind. Orn. ii, 



p. 806 (1700) ; Gray, Gen. B. iii. p. 659 (1846). 

 PHati cogote obscuro, Azara, Apunt. iii. p. 372 (1802) [on which is 



based S. chloripoda, Vieill.]. 

 Hati cabeza negra, Azai-a, Apunt. iii. p. 373 (1802). 

 ? Hati pico corto, Azara, Apunt. iii. p. 376 (1802) [on which is based 



S. hrevirostris, Vieill. ; a young bird]. 

 ? Sterna chloripoda, Vieill. K Did. d'Mist. Nat. xxxii. p. 171 (1819) ; 



id. Enc. Mahod. i. p. 349 (1820) ; Gray, Gen. B. iii. p. 659 



(1846) ; Hartl. Ind. Azara, p. 26 (1847). 

 ? Sterna hrevirostris, Vieill. N. Diet, d' Hist. Nat. xxxii. p. 166 



(1819) [based on Azara's " Hati pico corto "] ; VieiU. Enc. Meth. i. 



p. 347 (1820). 

 Sterna magnirostris, Licht. Verz. Doubl. p. 81 (1823) [type in Berlin 



Mus. examined, H. S.] : Spix, Ai: Bras. ii. p. 81, tav. civ. (1825j ; 



Neuwied, Beitr. Naturg. Bras. iv. p. 861 (1833) ; Tsch. ^^ 



Cab. Faun. Peruan., Aves, pp. 53, 305 (1846) ; Ha7-tl. Ind. Azara, 



p. 26 (1847); Cab. in Schomb. Reis. Guiana, iii. p. 461 (1848) ; 



Reichejib. Natat. tab. xviii. iig. 257 (1848) ; Biirm. Th. Bras. iii. 



pp. 450, 451 (1856) ; id. Reise La Plata, ii. p. 519 (1861) ; Schl. 



Mus. P.-Bas, Sternfe, p. 12 (1863) ; Taylor, Ibis, 1864, p. 96 



(Orinoco) ; Scl. ^- Salv. P. Z. S. 1867, pp. 593, 979 (Mexiana^ 



Lower Amazons) ; Grai), Hand-l. B. iii. p. 120 (1871) ; Pelz. Orn. 



Bras. pp. 324, 461 (1871) ; Layard, Ibis, 1873, p. 396 (Para) ; 



Saunders, P. Z. S. 1876, p. 643 (revision) ; Dur?if. Ibis, 1880, 



p. 412 (Rosario) ; Tacz. Orn. Perou, iii. p. 438 (1886); MacFarl. 



Ibis, 1887, p. 209 (Guayaquil). 

 PViralva simplex, Step)h. in Shaiv^s Gen. Zool. xiii. pt. 1, p. 172 



(1825). 

 "Sterna speculifera, Temm.," Less. TraitS, p. 622 (1831: Brazil) 



[cf. Puch. Rev. Zool. ii. (1850) p. 544]; Gray, Gen. B. iii. p. 659 



(1846). 

 Phaethusa magnirostris, Waqler, Isis, 1832, p. 1224 ; Gray, List 



Gen. p. 79 (\M0), p. 100 (1841) ; id. Gen. B. iii. p. 6.59 (1846) ; 



Rcichenb. Syst. Nat. t^ib. iv. (1850) id. Av. Syst. Nat., Longip. 



