22 Genera of Humming Birds. 



Eudosia yarelli, Muls. Cat. Ois. m., 1875, p. 32. 



Erdidia yarelli, Muls. Hist. Nat. Ois. m., 1877, t. iv., p. 115. 



YarreWs Wood Star, Gould. Mon. Troch, vol. iii., p. 152. 



L'Eulidie de Yarell, Muls. Hist. Nat. Ois. m., 1877, t. iv., 

 p. 115. 



Habitat. — Bolivia. 



Male. — Upperside and four central tail feathers light 

 yellowish green. Throat metallic lilac with blue reflections. 

 Underside white-washed with green on the flanks. Lateral 

 feathers of tail stiff, narrow, and graduate to a point, dark 

 brown. Bill black. 



Total length, 2|- in. Wing, l^^. Tail, If. Culmen, f. 



Female. — Upperside like the male. Underside buffj-white. 

 Middle tail feathers green, next green with black tips, remainder 

 buff at base, then black tipped with white. 



This rare species is one of my desiderata. According 

 to Mulsant it was described by Bourcier from one specimen in 

 Georges Loddiges Collection, and dedicated to Mr. William 

 Yarrell, who was for a long time Vice-President of the Zoological 

 Society of London. If it can be relied upon, the types of the 

 species are still in the Loddiges Collection, now the property of 

 his grandson. 



Genus XIII. Rhodopis, Keich, Aufz. der. Colib., 1853, p. 13. 



Type : 0. vesper, Lesson. 



Bill nearly twice as long as the head, curved for its entire 

 length, and wide at base. Frontal feathers projecting on the 

 culmen and hiding the nostrils. Wings long, reaching beyond 

 the middle of tail. Tail deeply forked, feathers graduated to 

 their tips, which are pointed. Tarsi clothed. Sexes similar. 

 Throat of brilliant hues. 



33. Ehodopis vesper. Lesson, Ois. Mouches., 1829, p. 85. 



Calothorax vesper, Gray, Gen. of Birds, vol. i., p. 110. 

 Thaumastura vesper, Bon, Compt. Kend., 1850, p. 383. 

 Lucifer vesper, Bon, Rev. and Mag. Zool., 1854, p. 257. 

 Rhodopis vespera, Reich, Aufz. der Colib., 1853, p. 13. 

 Calliphlox vespera, Reich, Troch. Enum., 1855, p. 10. 

 Evening Humming Bird, Gould, Mon. Troch., vol. iii., p. 154. 

 Le Rhodopis vesper, Muls., Hist. Nat. des. Ois., m. vol. iv., 

 p. 24. 



Habitat. — Peru. 



