Vol, XV 



J ' Ohkriiolser, Dc^cripiio)! of a New Atnoziliit 'IC 



be nearer cerTi/i/Tc/ifn's. Tlie other example is a female from 

 the same locality, and was taken on May 28, 1894. ' So far as the 

 color of its posterior lower parts is concerned, it can scarcely be 

 separated from the darker examples of chaicohota,- thou<;h the 

 lower tail-coverts are more like ccrvinivc)it7-is ; but in view of the 

 date and locality it would appear to be considered better as an 

 unusually pale cerviniventris than as a belated migrant of chakoiiota. 



One specimen of A. cerviniventris (No. 38634, Am. Mus. Nat. 

 Hist.) is from Cordova, Vera Cruz, the type locality, and is one 

 of the specimens obtained by Sallts the collector of Gould's type 

 specimens. It may therefore be regarded as typical of this form. 

 The two darkest birds in the series are respectively from Coatzo- 

 cualcos and Tlacotalpan, Vera Cruz, but others from both of these 

 localities are noticeably less deeply colored. 



In Amazilia yucataneusis the posterior lower parts are almost 

 ferrugineous, quite different in appearance from the cinnamon 

 rufous of the two dark Vera Cruz examples of cerviniventris ; 

 though in respect to the shade of this color, these latter more 

 nearly approach yucatanensis than any of the other specimens 

 now at hand. But the~extension of bronze green over the breast 

 and sides is very strongly indicated in these two birds, leaving no 

 doubt of their correct identification with cerviniventris. Only one 

 example from the cerviniventris series shcnvs a marked approach 

 X.0 yucatanensis in the lateral extension of the green of the breast. 

 This specimen (No. 155313, U. S. Nat. Mus.) is from Ocozucu- 

 antla, Chiapas, Mexico, and was collected Aug. 19, 1895. At 

 first sight it shows scarcely more green upon the sides than do 

 the specimens of Amazilia yucatanensis examined, but upon close 

 inspection this color is seen to extend as a very slight wash con- 

 siderably farther back than in yucatanensis. Furthermore, this 

 Chiapas bird is so very much duller and paler below th?iX\ yucatan- 

 ensis that its identity Avith cerviniventris can hardly be questioned. 

 The evidence presented by the specimens above mentioned seems 

 not sufficient to establish intergradation between cerviniventris and 

 yucatanensis, and both are therefore here accorded full specific 

 rank. 



The author's thanks are tendered to INIr. Robert Ridgway for 

 the use of the National Museum series of Amazilia: to Dr. C. 



