282 TEOCHILID^. 



Trochilidees,' under the name of Bamphodon anais, seems to have confused it with 

 the South-American bird we now know as P. iolata. His first description oiE. anais 

 was based upon a Mexican specimen. 



P. thalasdna may readily be distinguished from P. cyanotis by its blue abdomen. 

 In very adult birds the chin is slightly tinged with blue, but not nearly so much so as 

 in P. iolata. 



2. Petasophora cyanotis. 



Trochilus cyanotus, Bourc. & Muls. Ann. Sc. Phys. et Nat. Lyoiij vi. p. 41 ^ 



Petasophora cyanotus, Gouldj P. Z. S. 1847, p. 8 ''. 



Petasophora cyanotis, Gould, Mon. Troch. iv. t. 228 (May 1853) »; Cab. J. £. Orn. 1863, p. 162*; 

 Lawr. Ann. Lye. N. Y. ix. p. 125 'j Prantz. J. f. Orn. 1869, p. 316 ^ Salv. P. Z. S. 1870, 

 p. 210 ' ; Cat. Birds Brit. Mus. xvi. p. 110 ° ; Boucard, P. Z. S. 1878, p. 69 ' ; Nutting, Pr. 

 U. S. Nat. Mus. V. p. 500"; Zeledon, An. Mus. Nac. Costa Kica, 1887, p. 121". 



Petasophora cabanidis, Heine, J. f. Orn. 1863, p. 182 '^ 



Petasophora cabanisi, Lawr. Ann. Lye. N. Y. ix. p. 126 ". 



P. ihalassince similis, sed colore violaceo a mento et abdomine medio omnino absente. 



Hah. Costa Rica {Carmiol, Endres), Barranca s, Dota^, Grecia {Carmiol), Cartago 

 {Cooper % Orosi {Kramer % Irazu {Boucard^, Bogers% 'Lo. V&hndi {Nutting '^% 

 Faldas de Irazu {Zeledon^''-), Las Cruces de Candelaria {Zeledon); Panama, 

 Volcan de Chiriqui, Chitra, Calovevora {ArcS '^). — Sodth Ameeica, Andes, from 

 Colombia and Venezuela ^ to Bolivia '^. 



Birds of this species from Costa Eica have been separated from the South-American 

 form both by V. Heine and Mr. Lawrence under the names of P. cabanidis and 

 P. cabanisi ; but their comparisons are chiefly made with P. thalassina, which is certainly 

 a distinct species. The difierences observable between the Costa Rican and Andean 

 birds are very slight, and consist in the former being rather darker on the abdomen 

 and in the bright feathers of the throat spreading further over the breast. We doubt 

 if even these slight characters are constant, but due in a great measure to the way the 

 skins are made up. 



P. cyanotis is a common bird in the highlands of Costa Eica and the State of Panama. 

 A gap then occurs in its range, and it reappears in the Andes of Venezuela and 

 Colombia, and thence passes southwards as far as Bolivia. 



Ftilosis plerumque fusca. 

 3. Petasophora delphinse. 



Omismya delphince, Less. Rev. Zool. 1839, p. 44^. 



Petasophora delphince, Gould, P. Z. S. 1847, p. 9'; Mon. Troch. iv. t. 229 (May 1853) '; Salv. 



Ibis, 1860, pp. 194*, 195°, 261°, 276'; 1872, p. 320 ^ P. Z. S. 1870, p. 210»; Cat. 



Birds Brit. Mus. xvi. p. Ill " ; Scl. & Salv. P. Z. S. 1870, p. 837 ", 

 Eusco-brunnea, tectricibus supracaudalibus obscurioribus et cum uropvgio ferrugineo terminatis: subtus 



