ADAPTATIONS AND DISTRIBUTION 



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Fig. 20. Temporary, turbid, very shallow pool near eastern edge of Las Vegas, New Mex- 

 ico, in which "stalked eggs" of Scaphiopiis bombifrons were observed in 1940 

 (Bragg, 1941). This is the shallowest water ever known to have been used by this 

 species. The pool was "alive" with their tadpoles when the picture was taken. This 

 pool was not used by the related S. hammondii. Photo by the author, .-August 17, 1940. 



Fig. 21. Temporary, clear pool about 2-2 '/i feet m i.ximum dcpdi in northern portion of 

 Las Vegas, New Mexico. Scaphiopiis homhijrons but not 5. hammondii produced 

 tadpoles here in 1940. Calling males and one mated pair of Fs. triscriut.i were also 

 found (see Bragg, 1941). Photo by the author, August 17, 1940. 



97 



