540 Annals of the Carnegie Museum. 



has a decided rusty cinnamon tinge on the forehead and abdomen. 

 The only other female examined from these islands is referable to 

 C. p. socorroensis (see beyond). 



Arizona examples seem to vary in shade more than those from 

 Lower California, some few individuals being quite close to C. p. 

 passerina, while others agree well with birds from the type locality. 

 Farther south, in Sonora and Sinaloa, the vinaceous shade of the 

 male seems to deepen, a small series from Sonora in the Brewster 

 Collection, and an example from Culiacan, Sinaloa (No. 164,472, 

 Collection Biological Survey), being very close to Florida skins in 

 this respect. On the other hand, I am unable, after comparison of 

 an extensive series, to find any constant differences in color between 

 specimens from Texas and those from Lower California, but the 

 former average somewhat larger in size. Passing southward, we 

 find males from Linares in Nuevo Leon, and Victoria and Tampico 

 in Tamaulipas, a shade darker below, as also are those from the State 

 of Vera Cruz. There is also a corresponding but slight average color- 

 difference in females from the same localities. 



Returning to the west coast, we find the few available specimens 

 from Jalisco, Guerrero, Oaxaca, and eastward to Chiapas and Cam- 

 peche, agreeing in slightly darker general coloration with those from 

 Sinaloa. Yucatan and British Honduras birds, however, are very 

 puzzling, and I believe really constitute a series of intergrades between 

 C. p. pallescens on the one hand and C. p. insidaris and C. p. neglecta 

 on the other. Contrary to what might be expected, the vinaceous 

 color is deeper, and the bill seems decidedly paler and more yellowish 

 at the base. These characters are so evident in two adult males and 

 one adult female from Cozumel Island that, were it not for their 

 decidedly larger size, they might readily be referred to C. p. insidaris, 

 the only color-difference obvious being the less amount of white on 

 the under tail-coverts. Some of the Yucatan skins, however, are 

 closer to the Central American form, C. p. neglecta. 



Chaemepelia passerina neglecta Carriker. 



(?) "Colombicolin de San Carlos" (Centre-Amerique) Lesson, Descr. Mam. et 

 Ois., 1847, 212. 



Chamccpclia passerina (not Colmnba passerina Linnaeus) (?) Sclater and Salvin, 

 Ibis, 1859, 223 (Duenas, Guatemala; habits). — (?) Salvin and Sclater, Ibis, 

 i860, 45 (Guatemala; nesting). — Lawrence, Ann. Lye. Nat. Hist. N. Y., IX, 

 1868, 139 (San Jose and "Catargo" [= Cartago], Costa Rica); IX, 1869, 207 



