8 



the malęs and only distingiiishable from them by their smaller size 

 and mere delicate contour : the young too assume the plumage of the 

 adult. 



The oldest known species of this form constitutes the type ; it is 

 the 



Sp. 1. Petasophoka serrirostris. 



Trochilus serrirostris, Vieill. Nouv. Dict. tom. vii. p. 359 ; 

 Ency. Mėth. part 2. p. 561 ; Ois. Dor. tom. iii. pi. 1. 

 ined. 

 Omismya petasophora, Less. Ois. Mon. pi. 1 ; Ib. Troc. 

 pls. 12 & 59; Pr. Max. de Wied, sp. 10; Temm. 

 PI. Col, 203. fig. 3 ; Jard. Nat. Lib. vol. i. p. 120. 

 pi. 13, malė; vol. ii. p. 81. pi. 15, fem. 

 Petasophora serrirostris, G. R. Gray, List of Gen. of 

 • Birds, 2nd edit. p. 17. 

 Httb. Brazil. 



tSp. 2. Petasophora cyanotus. 



Trochilus cyanotus, Bourc. Rev. Zool. 1843, p. 1 ; Ann. 

 de Lyons, tom. vi. p. 41, but not the cyanotus stated 

 by Lesson to be synonymous \vith Delphince. 

 ITiis species appears to be the representative in the Cordilleras of 

 the P. serrirostris of the Brazils, from which it is at once distin- 

 guished by the blue colouring of the ear-coverts. 

 Hab. Bogota. 



Sp. 3. Petasophora thalassixa. 



Trochilus thalassinus, S\vains. Syn. Birds of Mexico, in 

 Phil. Mag. June 1827, p. 441. 

 DifFers from the other members of the genus by being of a smaller 

 size and by the greater extent of the blue on the cheeks and ear- 

 coverts ; it has also a slight wash of blue on the chin and centre of 

 the abdomen. 

 Hab. Mexico. 



Sp. 4. Petasophora Anais. 



Omismya Anais, Less. Col. Supp. pi. 3; Less. Troc. pis. 



55, 56, 57 ; Rev. Zool. 1838, p. 315, 1839, p. 19 ; 



Less. Velin, no. 11 ; Echo du Monde savante, 1843, 



no. 31. ined. pi. 11. 



Much confusion evidently exists with respect to this species, M. 



Lesson having figured one bird and described another with the šame 



appellation ; under these circumstances it will be to the advantage 



of scieuce to retain the specific term Anais for the bird best known 



to omithologists by that designation, the species so common in all 



coUections from Bogota, the great Anais of the French, and which is 



a very fine species, distinguished by the esistence of a well-defined 



band of blue on the throat. The female is fuUy as bright as the 



malė, but at least one-third smaller in size. 



Hab. Venezuela and all the Cordilleras in the neighbourhood of 

 Bogota. 



