Islands of the Coast of Yucatan, S^c. 253 



northern examples, a character not seen in birds from 

 Guatemala. 



The species occurs commonly in Mexico and Guatemala, 

 but more rarely further south, and has not been noticed in 

 the West-Indian Islands. 



^d7. Myiodioctes mitratus. 



Myiodioctes mitratus (Gm.) ; Salv. & Godm. Biol. Centr.- 

 Am., Aves, i. p. 167. 



Sylvania mitrata, Ridgw. Proc. U.S. Nat, Mus. viii. 

 p. 564. 



Holbox I. (December); Mugeres I. (December); Cozu- 

 mel I. (January) ; Ruatan I. ; Bonacca I. (September). 



Also a common winter visitor to Mexico and the whole 

 of Central America, and found in Cuba and Jamaica. 



38. Setophaga ruticilla. 



Setophaga 7'uticilla (Linn.) ; Salv. & Godm. Biol. Centr.- 

 Am., Aves, i. p. 178; Ridgw. Proc. U.S. Nat. Mus. viii. 

 p. 564. 



Holbox I. (December) ; Mugeres I. (December) ; Cozu- 

 mel I. (January, May) ; Ruatan I. 



Abundant throughout Mexico, Central America, the West- 

 Indian Islands, and Northern South America in Avinter. 



-^-39. ViREO CALIDRIS. 



Vireo calidris (Linn.) ; Salv. & Godm. Biol. Centr.~Am., 

 Aves, i. p. 186. 



Cozumel I. (May). 



A single specimen of this West-Indian Vireo, whose winter 

 migration extends to the northern parts of South America. 



-^ 40. ViREO OLlVACEtS. 



Vireo olivaceus (Linn.) ; Salv. & Godm, Biol. Centr.-Am,, 

 Aves, i. p. 188. 



Ruatan I. • Bonacca I. (September). 



A migrant from the north, of very rare occurrence in 

 Mexico and Cuba, but more common in Guatemala, and 

 thence southwards to Colombia. 



