350 TROCHILIDA. 
k". Cauda brevior sed plus minusve irregulariter constructa, rectricibus mediis 
haud abnormaliter brevibus. 
i", Rostrum elongatum, decurvum ; plume gulares laterales elongate. 
CALOTHORAX. 
Calothorax, Gray, List Gen. B. p. 18 (1840) ; Salv. Cat. Birds Brit. Mus. xvi. p. 390. 
In this and the following genera the tail is not deeply forked asin Doricha, but is 
more or less irregularly formed, some of the rectrices being peculiar either for their 
attenuated width or for their comparative length. The central rectrices are, however, 
not abnormally short, as is the case in Chetocercus and other allied South-American 
forms. 
Calothorax differs from Selasphorus and its allies in having a longer more arched 
bill. 
‘Two allied species are included in Calothorax—one of them ranging over North- 
western Central Mexico to Puebla and Orizaba; the other occurring in the State of 
Oaxaca. 
1. Calothorax lucifer. 
Cynanthus lucifer, Sw. Phil. Mag. new ser. i. p. 442°. 
Calothorax lucifer, Gray, Gen. Birds, i. p. 110°; Cab. & Heine, Mus. Hein. iti. p.55°; Scl. P. Z.S. 
1856, p. 288*; 1864, p. 177°; Salv. Cat. Strick]. Coll. p. 864°; Cat. Birds Brit. Mus. xvi. 
p- 390"; Sumichrast, La Nat. v. p. 250°. 
Trochilus lucifer, Finsch, Abh. nat. Ver. zu Bremen, 1870, p. 324°; Herrera, La Nat. (2) i. 
p. 822°. 
Ornismya cyanopogon, Less. Hist. Nat. Ois. -Mouches, PP. xvi, xlvi, 50, t.5°'; Suppl. pp. 117, 
119, tt. 9, 10”. 
Trochilus cyanopogon, Sw. Birds Brazil & Mex. t. 777°. 
Calothorax cyanopogon, Gould, Mon. Troch. iii. t. 143 (Sept. 1857) “ , Villada, La Nat. ii. p. 357"; 
de Oca, La Nat. iii. p. 104*°; Boucard, Ann. Soc. Linn. Lyon, Xxii. p. 21, 
Trochilus simplex, Less. Hist. Nat. Col. p- 86, t. 23°. 
Trochilus corruscus, Licht. Preis-Verz. Mex. Vog. p. 1 (ef. J. £. Orn. 1863, p. 55). 
Supra nitenti-aureo-viridis, capite summo obscuriore, uropygio magis aurescente: subtus gula micanti-lilaceo- 
rubra, pectore, abdomine medio et tectricibus subcaudalibus albis, hypochondriis pallide fulvis viridi 
lavatis ; caude rectricibus quatuor mediis dorso concoloribus, reliquis purpureo-nigris, lateribus albo ter- 
_ minatis, extima angusta acuta: rostro nigro. Long. tota circa 3°5, ale 1:5, caude rectr. med. 0°6, rectr. 
longissimi 1-2, rostri a rictu 1:0. 
Q supra maris similis, subtus pallide rufescens, abdomine medio albicantiore, plaga infra oculos fusca; rectrici- 
bus lateralibus ad basin fulvis, apicibus albis fascia lata subterminali nigra. (Descr. maris et femina ex 
Ajusco, Valley of Mexico. Mus. nostr.) 
Hab. Muxico? ¢ (7. Mann ®), Sierra Madre of Sinaloa (Grayson, fide Finsch °), Sierra 
de San Luis Potosi, Bolafios and Lake Chapala in Jalisco, Ajusco in the Valley 
of Mexico (W. B. Richardson"), Temiscaltepec (Bullock), Valley of Mexico 
