The Proboscidia. 
M. ai-ve: 
Parallels between the species of Emmenodon and Elephas 
also exist. As but two species of the former genus are 
known, we must look for future discoveries to increase the 
number of correspondences. The species of both g-enera 
which approach nearest to Mastodon have a smaller number 
of cross-crests, which are of lesser elevation, and whose in- 
tervening valleys are occupied by but a shallow deposit of 
cementum i fig. 3, C. D.) These are the Stegodons of Falconer; 
(I). In the other group, (2) the crests are numerous and ele- 
vated, and their interspaces are filled with cementum. (Fig. 
3, E. F.) 
Emmenodon. Elephas. 
I E. eUphantoides. E. bombifrons. 
ngnis. 
It is observable that each type of molar teeth of the thn 
genera first compared, has representatives in the regioi 
where their species occur ; North America, Europe ar 
India. 
The North American species of this family are distil 
guished by the following characters of the molar teeth.' 
/?. Valleys unin 
