FROM TEXAS AND MEXICO. 135 



The specimens from this locality show a great deal of 

 individual variation ; it ranges from those in which a light 

 ground color is marked with numerous spots of brown to 

 those on which the ground is so dark brown the spots are 

 invisible. 



R\NA BERLANDIERI Baii'd, 1858. 



Monclova, San Pedro, and San Luis Potosi, Mexico. 



But one of the lot has the foot webbed as figured by 

 Baird, Mex. Bound., pi. 30, tig. 10. Commonly the mem- 

 branes do not extend nearly so far toward the end of the 

 longest toe. Whether the more complete web is a loeal 

 peculiarity can only be determined by more specimens. 



The Monclova representatives of this variety of li. vires- 

 cens Kalm, 1761 (li. halecina Schreb., 17*2, in synon.), 

 are of an ashy color, with the central portions of the spots 

 much faded. 



ENGYSTOMA CAROLINEXSE IMbl'., 1836. 



Corpus Christi, Mexico; Goliad, Goliad Co., Tex. 



These types have the single tarsal tubercle ; the snout 

 is moderately long ; the color is more uniform than in those 

 from Carolina ; the longitudinal bands are absent, and there 

 are a few scattered spots of black on back and top of legs. 



Paludicola nitida Pet. ; Blgr. 



Sierra de San Miguelito, nine leagues south of San Luis 

 Potosi. 



Bufo yalliceps Wiegm., 1833. 



Corpus Christi and Monclova, Mexico; San Antonio, 

 Texas. 



Adults from Monclova are without the dark mottling 

 beneath. The young have an extensive patch of brownish 

 along the median line, from the throat to the posterior 



J 38EX IXST. BUI.LI.IIN, V<>L. XIX 11 



