FROM TEXAS AND MEXICO. 137 



pactilis, the interspaces more distinct, the general appear- 

 ance smoother and the ground color lighter. A male has 

 a single opening to the gular sac, on the left side. 



There is not enough in the description of B. diplernus, 

 from Montana, to separate it from half-grown B. speciosus. 



Bufo coMrACTiLis Wiegm., 1833. 



Monclova and Corpus Christi, Mex. 



Readily distinguished from the preceding by the flat 

 crown, the lack of the ridges, the rougher, more warty 

 skin and the darker ground color. 



Bufo punctatus B. &. G., 1852. 



.Monclova; nine leagues south of San Luis Potosi ; Si- 

 erra Nola, Tamaulipas, Mex. 



On the adult there is a slight supraorbital ridge and a 

 shallow concavity on the broad crown. The preorbital 

 and the postorbital ridges are quite prominent ; the labial 

 border is much expanded at the angle of the mouth ; the 

 black dots persist on the ventral surfaces. 



Bufo debilis Girard, 1854. 



San Antonio, Tex. 



Young specimens bear some resemblance to those of B. 

 punctatus. The paratoids are longer. Individuals of 

 about three-quarters of an inch in length usually have a 

 single dark spot under each shoulder {B. insidior Girard) 

 otherwise the lower surface is uniform yellowish. 



Acris crepitans Baird, 1854. 



Uvalde, Sutherland Springs, and San Antonio, Tex. 



Hyla eximia Baird, 1854. 



Mountains of Alvarez and City of Mexico. 



