Islands of the Coast of Yucatan, ^c. 203 



Two specimens, one of which agrees with E. verticalis 

 from the mainland, the other seems closer to E. chloronota ! 

 This seems to raise the question as to the relationship of 

 these birds, and to suggest that there may be differences of 

 sex not hitherto suspected. 



77. SpIZA AMERICANA. 



Spiza americana (Gm.) ; Salv. & Godm. Biol. Centr.-Am., 

 Aves, i. p. 416. 



Cczumel I. ; Ruatan I. 



Apparently a very common bird on these islands, probably 

 during migration. In its southern range it reaches Colombia 

 and Venezuela, but is not known in the Antilles. 



~— 78. Chrysomitris mexicana. 



Chnjsomitris mexicana (Sw.) ; Salv. & Godm. Biol. Centr.- 

 Am., Aves, i. p. 431. 



Mugeres I. 



An adult male and a female of this species. 



* 79. DOLICHONYX ORYZIVORA. 



Dolichonyx oryzivora (Linn.) ; Salv. & Godm. Biol. Centr.- 

 Am., Aves, i. p. 448; Salv. Ibis, 1885, p. 191. 



Cozumel I. (April) . 



It is the eastern typical bird which occurs on the islands of 

 this coast. Its southern migration extends to Paraguay, and 

 includes several of the West-Indian Islands. 



"'SO. AgEL/EUS phcexiceus. 



Agelceus phopniceus (Linn.); Salv. & Godm. Biol. Centr.- 

 Am., Aves, i. p. 453. 



Cozumel I. (May). 



A common resident species in suitable places in Mexico 

 and Guatemala, its range extending southwards to Western 

 Costa Rica. 



— 81. Icterus spurius. 



Icterus spiirius (Linn.) ; Salv. & Godm. Biol. Centi\-Am., 

 Aves, i. p. 464. 



Holbox I. (December) ; Cozumel I. (April) ; Ruatan I. 



Many specimens, including adult birds of both sexes. The 



