1884. J O [C ope. 



the deutal characters of the Indian species I am indebted to Messrs. Fal- 

 coner and Lyclekker : 



Mastodon americanus Cut., N. America. 



fborsoni Hays, E. and S. Europe. 

 miriftcus Leidy, N. America. 

 " falconeri Lydd., India. 



" armrnensis C. & J., Europe. 



" sivalensis Falc, India. 



" latidens Clift., India. 



Dibelodon shepardi Leidy, California, Mexico. 

 ' ' tropicus Cope, Tropical America.. 



" Jwmboldtii Cuv. , South America. 



Tetrabelodon angnstidens Cuv., India, Europe, N. America. 

 andium Cuv., S. America, Mexico. 

 productus Cope, SW. N. America. 

 ," euhypodon* Cope, N. America. 



pentelici Gaudry, SE. Europe. 

 " perimensis Falc, India. 



" pandionis Falc, India. 



" turieensis\ Schinz, Europe. 



" campester Cope, N. America. 



" long irostris Kaup, Europe. 



The condition of the inferior incisors is unknown in the Mastodon atti- 

 cus Wagner, and M. serridens Cope, and M. proavus Cope ; and in some of 

 the above species the presence of an enamel band on the superior incisors 

 has not been established. 



I may add that I do not perceive how the so-called genus Stegodon can 

 be distinguished, as at present, by the number of crests of the intermediate 

 molars, and by the presence of cementum. It will probably be necessary 

 to look for other characters in order to sustain it. 



Dibelodon shepardi Leidy. 



Mastodon shepardi Leidy, Proceedings Academy Philadelphia, 1870, p. 

 98 ; 1872, p. 142. 



Mastodon obscurus Leidy part, Report U. S. Geol. Survey Terrs. I, p. 

 330, Plate xxi. 



This species was originally proposed on the evidence of a last inferior mo- 

 lar tooth from Contra Costa county, California, and a part of a superior tusk 

 from Stanislaus county in the same State. Dr. Leidy subsequently aban- 

 doned the species. I however revived it in a synoptic table of the species 

 of North American Mastodons in 1884. X 



The fossils of the Museum National of Mexico, examined by me, included 



* American Naturalist, 1884, p. 525. 



f Von Meyer is my authority for the presence of rnp„n fibular tusks in this 

 species, = M. virgatidens Meyer. 

 X American Naturalist, 1884, p. 524. 



