154 Genera of Humming Birds. 



Thaumatias norrisii, Elliott, Ibis., 1878, p. 44. 



Thaumatias lerdi, De Oca, la Naturaleza, 1874, t. iii, p. 24. 



Norris's Emerald. 



Le Leucodore de N orris, Muls., Hist. Nat. Ois. Mou., 1874, 

 t. 1, p. 310. 



Habitat. — Mexico. 



Male. — Upper parts golden-green. Throat and sides of neck 

 metallic golden-green. Breast white. Abdomen and flanks 

 pale rufous. Uppertail-coverts light grayish-green. Under- 

 tail-coverts grayish-white. Wings pale green. Tail shining 

 grayish-green. Feet flesh colour. Bill flesh colour, black at 

 the point. 



Wing, 55 mill. Tail, 35. Bill, 18. 



" Bourcier, P.Z.S., 1847, p. 47." 



221. Agyrtria brevirostris, Less., Ois. Mou., 1829, p.p. 



35-211. 

 Basilinna brevirostris, Less., Ind. Gen., and Syn., Gen. 

 Troch., 1831, p. 26. 



Polytmus brevirostris, Gray, Gen. Birds, vol. i., p. 108. 



Thaumatias brevirostris, Bon., Consp. Gen. Av., 1850, 

 vol. i., p. 78. 



Agyrtria brevirostris, Reich., Aufz. der Col., 1853, p. 10. 



Short-billed Emerald, Gould, Mon. Troch., vol. v., p. 298. 



Le Thaumatias brévirostre, Muls., Hist. Nat. Ois. Mou., 



1874, t. i., p. 242. 



Habitat. — Brazil. 



Male. — Upperside shining bronzy-green. Median rectrices 

 shining olive-green, lateral olive-green, with a subterminal 

 black bar near the tips, which are grayish-bronze. Sides of 

 neck and breast metallic-green. Throat, centre of breast, 

 and abdomen white. Flanks bronze-green. Undertail-coverts 

 gray, margined with white. Wing purple-brown. Maxilla 

 black. Mandible flesh colour, with black tip. 



Total length, 2|-in. Wing, 2. Tail, i-|. Culmen, f. 



Female. — Like the male, less brightly coloured on sides of 

 neck and breast. Lateral rectrices slightly tipped with gray. 



Abundant in Brazil. 



