TEOCHILUS. 359 



2. Trochilus alexandri. 



Trochilus alexandri, Bourc. & Muls. Ann. Sc. Phys. et Nat. Lyon, ix. p. 330 ' ; Gould, Mon. Troch. 

 iii. t. 132 (Sept. 1851) '; Scl. P.Z. S. 1864, p. 177 = ; VHlada, La Nat. ii. p. 351 *; de Oca, 

 La Nat. iii. p. 102'; Herrera, La Nat. (2) i. p. 322'; Salv. Cat. Birds Brit. Mus. xvi. 

 p. 402'. 



T. colubri similis, sed gula antica cum mento nigra, gula postica micanti-violacea facile distinguenda. 

 $ feminse T. colubris persimiHs, sed rostro longiore forsan distinguenda. 



Eab. NoKTH America, from California and Utah southwards to Arizona. — Mexico, 

 Montemorelos, Sierra Madre, and Monterey in Nuevo Leon (F. B. Armstrong ^), 

 San Diego in Chihuahua (Bobimtte, in U. S. Nat. Mus.), Nuri in Sonora( PT. Lloycf), 

 Xeres in Zacatecas, Plains of Colima (PF. B. Richardson''), Valley of Mexico 

 {White ^, de Oca^, Boucard, Herrera^ Venta de Zopilote in Guerrero {Mrs. 

 H. H. Smith 7). 



Trochilus alexandri is a close relative of T. colubris and appears to take its place in 

 the Western States of America in the breeding-season, but the two mingle in the same 

 localities in the winter months, which are spent in Mexico. 



It probably breeds in the more northern parts of Mexico, as we have specimens of 

 both sexes shot in the State of Nuevo Leon in May and at Nuri in Sonora in April. 

 According to Villada * and de Oca ^, it visits the Valley of Mexico at the beginning of 

 autumn, but is rare there — a statement confirmed by M. Boucard, who says that during 

 his sojourn in Mexico he never met with this species except in the environs of the city *. 



* The following species of Calypte have usually been attributed to Mexico, but we have not succeeded in 

 obtaining any well-authenticated specimens of either of them from that country. Both are well-known 

 Califomian species: — 



Calypte annse. 



Omismya anna. Less. Hist. Nat. Ois.-Mouches, p. 205, t. 74. 

 Calypte amux, Salv. Cat. Birds Brit. Mus. xvi. p. 408. 



According to Gould and others this species is found in Mexico, but his specimeDS obtained from Floresi may 

 well have come from California. M. Boucard (Ann. Soc. Linn. Lyon, xxii. p. 20) says that it is very rare in 

 Mexico, but gives no authority for its occurrence there, and he does not seem to have met with it himself. 

 Herrera mentions it as found in the Valley of Mexico, but gives no particulars (' La Naturaleza,' (2) i. p. 322). 

 It certainly occurs near our northern frontier at Camp Grant, Arizona. 



Calypte costse. 



Omismya costce, Bourc. Eev. Zool. 1839, p. 294. 

 Calypte costce, Salv. Cat. Birds Brit. Mus. xvi. p. 404. 



This species has likewise been attributed by Gould to Mexico, apparently on the authority of Moresi's speci- 

 mens, all of which probably came from California. M. Boucard, however, states (Ann. Soc. Linn. Lyon, 

 xxii. p. 20") that it is very rare m Mexico, but, as in the case of G. amice, gives no authentic instance of its 

 occurrence. Mr. Belding, also, gives its name in the list of birds he observed at Guajnnas (Pr. U. S. Nat. Mus. 

 vi. p. 343). 



