286 TROCHILIDZA. 
2 mari similis, sed rectricum lateralium apicibus pallidioribus. (Descr. maris et feminz ex Coban, Guatemala. 
Mus. nostr.) | 
Hab. Mexico (de Oca"), Misantla (F. D. G.°), Cordova 1°, Playa Vicente (Boucard °), 
Sochiapa (IZ. Trujillo ®), Guichicovi (Sumichrast * ™), Chimalapa (W. B. Richard- 
son®), Temax in Yucatan (G. F. Gaumer®); British HonDuras, Corosal (Roe), 
Belize, Cayo and Great Southern Pine-ridge (Blancaneaua ®); GUATEMALA 
(Skinner +), Coban! 7, Choctum, Yzabal? ( O.S. & F. D.G.); Honpuras (G4. 
Taylor 1°), Truxillo (Townsend, in U.S. Nat. Mus.), Santa Ana (Wetthugel, in U.S. 
Nat. Mus.); Nicaragua, La Libertad and Santo Domingo in Chontales, Matagalpa 
(W. B. Richardson), Chontales (Belt ®). 
This distinct species of Agyrtria was discovered by Delattre in Mexico’. It is 
there a common species from the middle of the State of Vera Cruz southwards to the 
eastern side of the Isthmus of Tehuantepec, occurring also in Yucatan and thence 
through British Honduras to Eastern Guatemala and Nicaragua. It is very abundant 
in the neighbourhood of Coban at an elevation of about 4300 feet in the month of 
November, and we also met with it at Yzabal in September at nearly the sea-level. At 
the latter place it frequented the flowers of the underwood under the forest trees. At 
Coban the flowering Salvie were the chief attraction. 
A, candida is the only species of Ayyrtria which has the crown of nearly the same 
colour as the back and the whole of the under surface, including the under tail-coverts, 
pure white. The sexes are much alike, but the female may be distinguished by the 
tips of the lateral rectrices being paler than in the male. 
bb’, Sexrus dissimiles. 
ARINIA., 
Arinia, Muls. “ Ann. Soc. Linn. Lyon, 1877, Oct. 12”; Salv. Cat. Birds Brit. Mus. xvi. p. 193. 
This genus was based by Mulsant upon a bird discovered by M. Boucard at Punta 
Arenas in Costa Rica. It is apparently closely allied to Agyrtria, but a difference in 
the coloration of the sexes separates the two forms. | 
Arinia is restricted in its range to a limited district of Costa Rica, in which country 
neither Agyriria nor Cyanomyia occur. 
J. Arinia boucardi. 
Arima boucardi, Muls. Ann. Soc. Linn. Lyon, 1877, Oct.*; Elliot, Syn. Troch. p. 209°; Sharpe, 
in Gould’s Mon. Troch., Suppl. (April 1885)°; Salv. Cat. Birds Brit. Mus. xvi. p. 193‘. 
Arena boucardi, Muls. Hist. Nat. Ois.-Mouches, iv. p. 194, t. 121°. 
Sapphironia boucardi, Boucard, P. Z. 8. 1878, p. 71°. 
* Male. Upper surface and flanks bronzy green, darkest on the head. Throat and breast shining bluish green. 
