TACHE. 207 
Supra nitenti-gramineo-viridis aneo vix tincta, capite summo obscuriore: subtus obscure ceeruleo-viridis, 
gutture medio plus minusve micanti-ceruleo ; tectricibus subcaudalibus albis; cauda saturate chalyheo- 
cerulea, rectricibus mediis saturate griseo terminatis: rostro corallino-rubro, apice nigro. Long. tota 
circa 3°8, alee 2:1, caude rectr. med. 1°1, rectr. lat. 1°25, rostri a rictu 0°9. 
@ supra mari similis: subtus grisea, abdomine medio et tectricibus subcaudalibus pallidioribus, regione 
auriculari fusca, stria postoculari elongata, alba; caude rectricibus lateralibus albo terminatis, rectrice 
extima utrinque quoque medialiter grisea, cauda minus fureata. Long. caude rectr. med. 1:0, rectr. 
lat. 1:2. (Descr. maris et feminse ex Bolafos, Jalisco, Mexico. Mus. nostr.) 
Hab. Soutnern Arizona!?.—MeExico, District of Moctezuma in Sonora (/. Ferrari- 
Perez ©), Nuri and Ysleta in Sonora (W. Lloyd }), Mazatlan (Grayson ®, Forrer), 
Guanajuato (Duges°, Sanchez ° 1"), Sierra de Victoria in Tamaulipas (W. B. Rich- 
ardson ), San Luis Potosi (Jouy, in U. 8S. Nat. Mus.), Jalapa (de Oca*), Alpine 
region of Orizaba (Swmichrast '), Aguas Calientes and Calvillo, Bolafios, San Blas, 
Lake Chapala (W. b. Richardson ©), Santa Ana in Jalisco (W. Lloyd %), Plains 
of Colima (Xantus, in U.S. Nat. Mus.), Patzcuaro (Ff. D. G. 1), Valley of Mexico 
(de Oca®, White, Boucard ©, Herrera’), Hacienda Eslava and Tetelco in the 
Valley of Mexico (Ff. Ferrari-Perez "), 
This now well-known Mexican species was described by Swainson! in his paper on 
Bullock’s collection, the type being supposed to have been obtained in the “Table 
iands,” which was most probably the case. Floresi collected many specimens during 
his residence in Mexico, but no record of the exact localities was preserved ; but very 
probably his specimens were secured near Bolafios, where the bird seems to be very 
common. Its range northwards extends beyond the Mexican political frontier into 
Southern Arizona, and it appears to be found nearly everywhere on the western side 
of the mountains from Sonora to Colima and to the Valley of Mexico. Its range in 
altitude, too, is great and extends from the sea-level to a height of 7000 or 8000 feet. 
1. latirostris is not confined to Western Mexico, for Mr. Richardson found it in the 
Sierra above Ciudad Victoria in Tamaulipas, and it is included in de Oca’s list of 
Jalapa birds *, and Delattre obtained a young male near the same place 1"; but we 
suspect that these specimens were shot in the higher parts of the Cofre de Perote, on 
the flank of which Jalapa is situated. This would agree with Sumichrast’s statement 
that it occurs in the Alpine region of Orizaba!!. In the Valley of Mexico it occurs, 
according to de Oca®, from November to the beginning of March, which is its time of 
nesting. It is not, however, a very common species. 
Mr. Richardson secured us a number of specimens at Bolafios in the State of Jalisco, 
all shot in the month of February. These show considerable variation in the intensity 
of the bright blue colour of the throat, some specimens being almost green, others 
deep blue. ‘This fact is of importance when the specific value of 7. magica. is 
considered. 
Senor A. Herrera describes 1° a nest of this species which he found at Chimalcoyoc 
in the Valley of Mexico as composed of the seeds of Asclepias linaria, and placed in a 
BLOL. CENTR.-AMER., Aves, Vol. II., May 1892. 33 
