from Northern Yucatan. 209 



Tlie tail consists of fourteen feathers as in the allied speci 



Fam. Penelopidae. 



86. Ortalida maccalli (Baird). 



Four specimens in the collection agree so well with Texan 

 examples, that I consider them the same ; they differ from 

 Wagler's description of 0. vetula. in the same manner as 

 pointed out by Prof. Baird. The skins measure from 19 to 20 

 in. in length (in a fresh state would be larger) ; wings from 7£ 

 to 8; tails, 6£ to 7 inches; these exceed the dimensions given 

 by Wagler. I have never seen an authentic specimen of 0. 

 vetula, or one answering accurately to "Wagler's description, 

 yet it is not improbable that it may be the species under con- 

 sideration. 



My specimen from Texas is in very fine order, and some- 

 what larger than those from Yucatan. 



Fam. Perdicidae. 



87. Ortyx nigrogularis, Gould. 



Fam. Charadriidae. 



88. Aegialites vociferus (Linn.). 

 Sisal. 



89. Aegialites nivosus, Cassiri? 



Celestin. 



One specimen marked as a maie ; it differs from two speci- 

 mens (in spring and winter plumage) from California, in having 

 the back of a much lighter color, and the head of a paler 

 ochreous ; the upper coloring is paler even than in A. melodvs^ 

 whereas in both my examples of nivosus thai pari ie darker; 

 the wings are shorter, and the quills :md tail feathers of a lighter 

 brown than in those from California, but as they agree in dis- 

 tribution of colors, size, and shape of the bill, I have placed it 

 provisionally as that species. 



