256 TROCHILIDE. 
b!. Maxille tomia tantum distincte serrata ad apicem ; corpus subtus plerumque 
(Pheoptila excepta) plumis nitidis ornatum. | 
ce". Spatio inter mandibule ramos nuda, culmen usque ad basin quoque nudum, 
tegule nasales nullo modo plumate. 
al”. Rostrum longius, sensim decurvum. 
at. Sexus dissimiles. 
IACHE. 
Circe, Gould, Mon. Troch. v. t. 388 (May 1857) (nec Mert.). 
Lache, Elliot, Syn. Troch. p. 234 (vice Circe); Salv. Cat. Birds Brit. Mus. xvi. p. 59. 
In this genus the bill is comparatively longer than in Chlorostilbon and not quite so 
straight, being slightly decurved ; the culmen is bare to the base, the nasal covers 
fully exposed, and the inter-ramal space nude. The sexes are very differently coloured, 
the males having the under surface more or less bright, the females greyish white. 
Four species are included in the genus, some of which are not well defined; these 
are separable into two groups, one of which contains larger birds, having the crown the 
same colour as the back; in the other the single species is smaller and has the crown 
glittering blue or greenish blue. The range of Jache is restricted to Mexico, one 
species reaching the confines of Arizona and thence spreading over the whole of the 
Mexican uplands to the valley of the city of Mexico. This species, J. latirostris, also 
reaches the coast of the Pacific in the State of Sinaloa. ‘The other birds all belong to 
Western Mexico and range from Mazatlan and the 'T'res Marias Islands to the Isthmus 
of Tehuantepec. 
This genus was first separated by Gould in 1857, and called by him Circe. This 
name having been previously used in zoology, Mr. Elliot substituted JZache for it in 
1879. 
a. Pileus dorso concolor; tectrices subcaudales albe. 
1. Iache latirostris. 
Cynanthus latirostris, Sw. Phil. Mag. new ser. i. p. 441°. 
Circe latirostris, Gould, Mon. Troch. v. t. 8338 (May 1857)°; Scl. P. Z.S. 1858, p. 297°; 1859, 
p. 867 “; 1864, p. 177°; A. Dugés, La Nat. i. p. 141°; Villada, La Nat. ii. p- 366°; 
Lawr. Mem. Bost. Soc. N. H. ii. p. 292°; de Oca, La Nat. iii. p. 65°; Boucard, Ann. 
Soc. Linn. Lyon, xx. p. 281°; Sumichrast, La Nat. v. p. 250”; Sanchez, An. Mus. Nac. 
Mex. i. p. 96; Henshaw, in Wheeler’s Geogr. & Geol. Surv. v. Zool. p. 380”. 
lache latirostris, Elliot, Syn. Troch. p. 285"; Salv. Cat. Birds Brit. Mus. xvi. p. 60”; Herrera, 
La Nat. (2) i. p. 322°. 
Ornismya lessonii, Delattre, Rev. Zool. 1889, p. 15”. 
