GENERA AND SPECIES. 137 



or nearly so, and banded with dusky near the 

 tip. "Wings ample. 



This is one of the best defined groups, ob- 

 serves Mr. Gould, of the family, and is dis- 

 tinguished by several peculiarities, the principal 

 of which are the greatly developed ear-coverts, 

 and their blue colour, and the similarity in the 

 colour of the sexes ; the females possessing all 

 the brilliancy of the males, and only distinguish- 

 able from them by their smaller size, and more 

 delicate contour: the young also assume the 

 plumage of the adult. 



The oldest known species constitutes the type; 

 it is the 



Sp. 1. PETASOPHOBA SEEEIEOSTEIS, Yieill. 

 Nouv. Diet. torn. vii. p. 359 ; Encyclop. 

 Meth. part 2, p. 561 ; Ois. Dor. torn. iii. 



P i.i. 



Ornismya petasophora, Less. Ois. 

 Mouches, pi. I. Ib. Troc. pis. 12 and 59. 

 Pr. Max. de Wied, sp. 10. Temm. pi. 

 col. 203, fig. 3. 



Trochiluspetasophoru8,T$&i .Lib . Ornith . 

 vol. i. p. 120, pi. 13, male ; vol. ii. p. 81, 

 pi. 15, fern. 



Petasophora serrirostris, Gr. B Gray, 

 List of G-en. of Birds, 2d edit. p. 17. 

 Hob. Brazil. 



Sp. 2. PETASOPHOEA CYANOTUS, Trochilus 

 cyanotus, Bourc. Eev. Zool. 1843, pi. 1. 

 Ann. de Lyons, torn. vi. p. 41 ; but not 



