PLATE 11 
Fig. 31a. Bufo cognatus cognatus, specimens from southeastern California. 
2028. 
Fig. 31Z>. Bufo woodhousii, nos. 1844 (left), 1843 (right), Mus. Vert. Zool.; 
specimens from Colorado River, at Potholes and 5 miles northeast of Yuma, 
Imperial County, collected April 27 and May 3, 1910; photographed April 20, 
1913. About % natural size. 2028. 
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