1911] Smith, Natural History of Ambystoma. 27 



Hoy, P. K. 



1871. The Development of Ambystoma lurida Sager. American 

 Naturalist, Vol. V, p. 578. 

 Kingsbury, B. F. 



1895. The Spermatheca and Methods of Fertilization in Some 

 American Newts and Salamanders. Transactions of the 

 American Microscopical Society, Vol. 17, pp. 261-304. 

 Piersol, W. H. 



1910. The Spawn and Larvae of Ambystoma jeffersonianum. 

 American Naturalist, December, 1910. 

 Powers, J. H. 



1907. Morphological Variation and Its Causes in Ambystoma 

 tigrinum. Studies from the Zoological Laboratory of the 

 University of Nebraska, August 8, 1907. 

 Smith. Bertram G. 



1907. The Breeding Habits of Ambystoma punctatum. American 

 Naturalist, Vol. XLI, No. 486. 



1910. The Structure of the Spermatophores of Ambystoma punc- 

 tatum. Biological Bulletin, March, 1910. 

 Wright, Albert H. 



1908. Notes on the Breeding Habits of Ambystoma punctatum. 

 Biological Bulletin, April, 1908. 



Wright, Albert H. and Allen, Arthur A. 



1909. The Early Breeding Habits of Ambystoma punctatum. 

 American Naturalist, Vol. XLIII, November, 1909. 



