Genera of Humming Birds. 361 



Female. — Exactly like the male, but slightly smaller. 

 Total length, 4fin. Wing, 2\. Tail, 2. Culmen, -f|. 



This extremely rare species was discovered by the well- 

 known explorer, Mr. Schombourg,at Roraima (British Guiana). 

 The type remained unique from 1843 to 1883, when the active 

 collector, Mr. H. Whitely, Junior, re-discovered the bird at 

 the same place. 



My specimens, male and female, were collected by him. 



It is a very good species, quite distinct from C. rufus. 



FAMILY XVIII. PHAETHORNIIDAE, 



OR Family of Hermit Humming-Birds. 



Size from very small to large. Bill long, more or less 

 curved. Sheath of both maxilla and mandible smooth ; nasal 

 covers partially exposed. Wings narrow and short. Tail 

 rounded, cuneate, or with the median rectrices much elongated. 

 Sexes alike. In the Genus Euxtoxeres the bill is curved to 

 the third of a circle. 



Type : Phaethomis, Swainson, Zool. Journ., 1827, p. 357. 

 Range. — Mexico to Bolivia, Colombia, Venezuela, Brazil, 



Guiana, Trinidad and West Indies. 



Genus CXLV. Glaucis, Boie. Isis, p. 545. 



Type : T. hirsitus, Gmelin. 



Bill long, much curved, stout and high at base. Wings 

 long and narrow. Tail short, rounded. Rectrices narrower 

 and pointed in females or young. Outermost one shortest, 

 the other rectrices gradually longer. Median shorter than the 

 lateral, close to it, and of the same length as the next one. 

 Sexes alike. 



Habitat. — Venezuela, Guiana, Trinidad, Grenada, Brazil, 

 Colombia, and Ecuador. 



488. Glaucis hirsuta, Gmel., Syst. Nat., 1788, t. i., p. 490, 



Trochilns braziliensis, Lath., Ind. Ornith., 1790, vol. i., 

 p. 308. 



Trochilus ferrugineiis, Wied. Beiltr, vol. iv., p. 120. 



