220 Field Museum of Natural History — Zoology, Vol. XIII. 



Petasophora cyanotus Gould, Mon. Trochil., IV, 1853, pi. 228. 



Petasophora cabanidis Heine,* Joum. fur Ornith., 1863, p. 182 (Costa Rica). 



Colihri cyanotus cabanidis Carriker, Ann. Carnegie Mus., VI, 1910, p. 538; 

 Hellmayr, and Seilern Arch, fur Naturg., Ab. A, Heft 5, 1912, p. 142, in 

 text. 



Colibri cabanidis Madarasz, Ann. Mus. Nat. Hung., IX, 191 1, p. 357, in text. 



Petasophora cyanotis Salvin, Cat. Bds. Brit. Mus., XVI, 1892, p. no; Allen, 

 Bull. Am. Mus. N. H., XIII, 1900, p. 140 (Valparaiso and El Libans, Colom- 

 bia); Bangs, Proc. N. E. Zool. Club, I, 1899, p. 76 (San Sebastian, etc.). 



Colibri cyanotus RiDGWAY, Bull. U. S. Nat. Mus., No. 50, V, 191 1, p. 484; 

 Chapman, Bull. Am. Mus. N. H., XXXVI, 1917, p. 294 (crit.). 



Colibri cyanotus cyanotus Hellmayr and Seilern, Arch, fur Naturg., Ab. A, 5 

 Heft, 1912, p. 141. 



Range: Costa Rica, Panama, Colombia, Venezuela, Ecuador,'' 

 Peru? Bolivia? 



11: Colombia 3; Venezuela (Merida) 3; Panama (Veragua) 3; 

 Costa Rica (Vol. Irazu) 2. 



*Colibri thalassinus (Swainson). Mexican Violet-ear. 



Trochilus thalassinus Swainson, Philos. Mag. N. S., I, 1827, p. 441 (Temascal- 



tepec, Mexico). 

 Petasophora thalassina Gould, Mon. Trochil., IV, 1853, pi. 227; Salvin, Cat. 



Bds. Brit. Mus., XVI, 1892, p. 109. 

 Colibri thalassinus Ridgway, Bull. U. S. Nat. Mus., No. 50, V, 1911, p. 482. 



Range: Southern Mexico and Guatemala. 

 4: "S. Mexico" 2; and Guatemala 2. 



*Colibri iolatus iolatus (Gould). Gould's Violet-ear. 



Petasophora iolata Gould, Proc. Zool. Soc. Lond., 1847, p. 9 (Bolivia). 

 Petasophora iolata Gould, Mon. Trochil., IV, 1853, pi. 225; Salvin, Cat. Bds. 



Brit. Mus., XVI, 1892, p. 107, part; Simon, Nov. Zool., IX, 1902, p. 179, 



part. 

 Petasophora coruscans Salvin, Cat. Bds. Brit. Mus., XVI, 1892, p. 109. 

 Colibri iolatus Hartert and Venturi, Nov. Zool., XVI, 1909, p. 222; Hellmayr 



and Seilern, Arch, fur Naturg., Ab. A, 5 Heft, 1912, p. 142, part. 

 Colibri iolatus Ridgway, Bull. U. S. Nat. Mus., No. 50, V, 19 11, p. 481, in key, 



part. 

 Rhamphodon anais Lesson, Hist. Nat. Trochil., 1832, p. 146, pi. 55 (not Ornismya 



anais Lesson). 

 Petasophora anais GouLD, Proc. Zool. Soc. Lond., 1847, p. 8; Elliot, Synop. 



Trochil., 1879, p. 50. 



• I cannot distinguish birds from Venezuela from those from Costa Rica (C. c. 

 cabanidis (Heine). See also Ridgway (I.e. footnote) and Chapman (I.e.). 



'• I have seen no specimens from Ecuador but Ridgway (I.e. footnotes, pp. 484- 

 485) states that birds from eastern Ecuador (Baeza) are larger and easily distin- 

 guished by their conspicuously buffy under tail coverts and are probably sub- 

 specifically distinct. " In this case it is hardly possible that those from Peru and 

 Bolivia should represent true C. cyanotis." 



