PETASOPHORA. 281 
Ptilosis plerumque nitidi-viridis. 
1. Petasophora thalassina. 
Trochilus thalassinus, Sw. Phil. Mag. new ser. i. p. 441°. 
Petasophora thalassina, Gould, P. Z. S. 1847, p. 87; Mon. Troch. iv. t.227 (May 1853) *; Scl. 
P. Z. 8S. 1858, p. 297*; 1859, pp. 367°, 386°; 1864, p. 1777; Scl. & Salv. Ibis, 1859, 
p- 127°; Salv. Ibis, 1859, p. 468°; 1860, pp. 195°, 260", 263; Cat. Birds Brit. Mus. 
xvi. p. 109”; Lawr. Pr. Bost. Soc. N. H. xiv. p. 284; Mem. Bost. Soc. N. H. ii. p. 292’; 
de Oca, La Nat. iii. p. 64°; Sumichrast, La Nat. v. p.250'7; Ferrari-Perez, Pr. U.S. Nat. 
Mus. ix. p. 157°; Herrera, La Nat. (2) i. p. 822”. 
Ramphodon anais, Less. Hist. Nat. Troch. p. 146, t. 56”. 
Ornismya anais, Less. Hist. Nat. Ois.-Mouches, Suppl. p. 104, t. 37. 
Trochilus anais, Sw. Birds Braz. & Mex. t. 75”. 
Supra nitenti-gramineo-viridis ; subtus gutture micanti-viridi, plumis singulis disco obscuriore ; abdomine 
medio saturate violaceo-cyaneo, hypochondriis et tectricibus subcaudalibus viridibus, his cervino lim- 
batis; mento, genis et plaga auriculari elongata, nitide violaceis; rectricibus mediis dorso fere concolor- 
ibus, reliquis cyanescentioribus, omnibus fascia subterminali nigricanti-chalybea: rostro nigro. Long. 
tota 4:5, alee 2°7, caude 1°7, rostri a rictu 1:0, 
2 mari similis, sed coloribus omnibus pagine inferioris minus nitidis. (Descr. maris et femine ex Duefias, 
Guatemala. Mus. nostr.) 
Hab. Mexico? (Benvelet*°, White’), Guanajuato (Sanchez), Temiscaltepec (Bullock +) 
Real del Monte, Ajusco (W. B. Richardson '°), Hacienda Eslava, Chimalpa and 
Tetelco in the Valley of Mexico, Montafia de Orizaba, Coatepec !®, Cordova (Sanchez, 
F. Ferrari-Perez °), Jalapa (de Oca® %, M. Trujillo °), Orizaba (Sumichrast “"), 
Puebla (errari-Perez +’), ‘Totontepec (A. Boucard®, M. Trujillo), Oaxaca 4 
(Fenochio**); GuatemaLa (Skinner’), Quezaltenango (0. S.1°), San Martin, 
Chuipache, Toliman (W. B. Richardson), Duefias ", Volcan de Fuego 1, Montafia 
de Chilasco, Coban (0. S. & F. D. G.). 
This species was first described by Swainson in 1827, from specimens obtained by 
Bullock at Temiscaltepec in Central Mexico 4, and it isnow known to be a not uncom- 
mon bird in the Valley of Mexico "°, chiefly in the months of June and July !°, and on the 
eastern edge of the plateau in the State of Vera Cruz. It appears to be absent from 
the sierras of Western * and North-western Mexico, and though we have not traced 
it northward of Real del Monte in the State of Hidalgo, Sefior J. Sanchez gives Guana- 
juato as one of its localities. In Guatemala it is a common characteristic bird of the 
highlands, where it keeps almost exclusively to the region of evergreen oaks, its range 
in altitude extending from about 5000 to 9000 feet above the level of the sea. In the 
oak forests it frequents the brushwood, and its presence may often be detected by 
the rather monotonous song the male utters when resting on a dead twig of some bush. 
Lesson, who gave a very fair figure of this species in his ‘ Histoire Naturelle des 
* Petasophora thalassina, Lawr. Mem. Bost. Soc. N. H. ii. p. 292, ex Tres Marias Is. (Xantus), is based upon 
a bird wrongly located. 
BIOL, CENTR.-AMER., Aves, Vol. II., Judy 1892, 36 
