2O INEZ WHIPPLE WILDER. 



This fact shows an extreme illustration of the conservation of 

 material in this species, and is quite in line with the conservation 

 shown in the reduction of the number of eggs. It shows a 

 decided advance in comparison with the habits of certain other 

 amphibians such as Cryptobranchus allegheniensis, for example, 

 which is prodigal in its egg production, but often uses its own 

 eggs as food (Smith, '07). Finally, it is certain that a most 

 potent contributory factor to the high percentage of success in 

 the development of the offspring of Desmognathus fusca is found 

 in the extraordinary constancy and devotion of the mother to her 

 offspring during the incubation period, a devotion no less effective 

 because it is an automatic response. 



BIBLIOGRAPHY. 

 Dunn, E. R. 



(In press) The Salamanders of the Genera Desmognathus and Leurognathus. 



Proc. U. S. National Museum. 

 Reed, H. D., and Wright, A. H. 



'09 The Vertebrates of the Cayuga Lake Basin, N. Y. Proc. Am. Phil. Soc., 



Vol. XLVIII. 

 Smith, B. G. 



'07 The Life History and Habits of Cryptobranchus allegheniensis. BIOL. 



BULL., Vol. XIII. 

 Wilder, H. H. 



'99 Desmognathus fusca (Rafinesque) and Spelerpes bilineatus (Green). 



Am. Nat., Vol. XXXIII. 

 Wilder, I. W. 



'13 The Life History of Desmognathus fusca. BIOL. BULL., Vol. XXIV. 



