550 F. SUMICHRAST ON THE GEOGRAPHICAL 



belongs to the fauna of the hot lands, but is also found occasionally at the height of 1200 

 metres. Its appearance at so great an elevation is, however, but for short periods. 



73. Tanagra diaconus. Vulg. Nevadito. Hot region. This is jet another species belonging 

 to the hot region that occasionally advances to the height of 1000 metres. This, however, 

 is not surprising, nor is it a fact that in the least invalidates the geographical division here 

 established. Certain species of birds, and most especially the berry-eating birds, are residents 

 of a region during the f)eriod of reproduction, and while they rear their young. When the 

 latter are in a condition to attend to their own wants, they leave for a short time their usual 

 abode, and sometimes extend their movements far beyond its limits, in search of the berries 

 upon which they feed. These remarks especially apply to the Tanagers. 



74. Tanagra abbas. Vulg. Cuadrilkro. Hot and temperate region. The above line 

 explains with sufficient exactness the distribution of this species, which is found from the 

 shores of the Gulf as far as Orizaba. The Cuadrilleros, as these birds are called, like most 

 of the Tanagers, move about in small flocks, and change continually from canton to canton, 

 in search of berries, the period of whose maturity is determined, for the most part, by the 

 height of the localities in which they grow. It is also to this instinct, or rather to this 

 necessity of changing temporarily their domicile, that we must attribute the presence in 

 localities, having an altitude of more than 1200 metres, of 



75. Chlorophonia occipitalis. Hot region. And of 



76. Euphonia affinis. And 



77. Euphonia hirundinacea. Vulg. Higucrillcro. Hot region. All of which species have 

 their true centre of propagation in the hot region. 



78. Euphonia elcgantissima. Vulg. Monjita. Hot, temperate, and alpine region. More 

 vagrant even than the preceding species. This bird is found at all heights. I have killed 

 it at the .altitude of 2000 metres, among the mountains of Orizaba. 



79. Euphonia Gouldii. Hot region. The only specimen I have saen of this pretty species 

 came from the hot lands, and from an altitude of 500 metres. There are also found, during 

 the winter, three other species of Tanagers, in the dej)artment of Vera Cruz, but these I 

 believe are only migratory. They are : — 



Pyranga rubra, Pgranga cestiva, Pgranga ludoviciana. 



FrINGILLIDjE. 



80. Hespcriphona AbciUii. Vulg. Pepiiero. Temperate region (?). I have found this species 

 but once, in August ( ?), at Orizaba, and I do not therefore know with exactness the limits 

 of its geographical distribution. It is probable that the alpine region of the State of Vera 

 Cruz can claim as one of its birds, the Hespcriphona vespertina. I met with it in May, 1857, in 

 the pine woods of Monte Alto, about twelve leagues from Mexico. 



81. Carpodacus htvmorrhous. Vulg. Bunion. Plateau. This species, common throughout 

 the plateau, is also found in the elevated portions of the State of Vera Cruz. 



82. Chrysomitris noiatus. Temperate region. 



83. Chrysomitris mexicanus. Vulg. Dominicpiito. Temperate region. 



These two species, though distributed throughout the greater portion of this department, 

 have their chief development in the temperate region. The last named nests in the neigh- 

 borhood of Orizaba. 



84. Chrysomitris jiiinix. Vulg. Dominiguiio montero. Plateau and alpine region. This bird 



