1889.] The Proboscidia. 195 
mentioned ; and as observed by Lydekker' it fails to furnish 
clear definitions. He remarks, under the head of the genus 
Eiephas, " There is no character by which the present genus 
can be distinguished from Mastodon ; and the division can be 
therefore only regarded as a matter of convenience." The 
characters presented in the above table are on the other hand 
very distinctive, and can be applied in all cases where we 
have the necessary information. This has not yet been ob- 
tained as regards all the species, and I have placed some of 
them in their respective genera provisionally. Such species 
are marked with an z'when the condition of the incisors is un- 
known, and with a/ when the same is true of the premolars. 
The species of the family described thus far, are as follows : 
pandionis Falc. Cautl. India. 
" pentelici GdcaAxy.*' Europe/. 
'* campester Co^e. N.America./. 
" longirostris Kaup. Europe. 
? serridens Cope. Texas PMexico ?F 
Dibelodon shepardi Leidy. California, Mexico. 
" cordillerarum^ Desm. South Americ 
tropicus Cope. South America and M 
^Catalogue of fossil Mammalia in the British Museum Pt. IV. p. 79. 
'^In compiling this list I have been greatly aided by the Memoirs of Lydekker in 
le Palaeontologia Indica, and in the Catalogue of the British Museum. 
^M.proavus Cope 1884 not 1873. 
4 According to Lydekker no premolars have been seen in this species. 
5 M. -ifloridanus Leidy. 
m Cuv. According to the recent researches of Burmeister, this species 
.. j:u..,. ._ , ,0.. _^ggy, j^5„_ Preuss. Akad. Wiss. Berhn 
Mexico with such tusks reported by 
mandibular tusks, 
losap. 717.; Hence the specimens 
Falconer, must be assigned elsewhere. 
"This species is said by Lydekker not to possess premolars. Leidy Report U . S. 
Geol. Surv. Terrs. PI., figures a tooth as a premolar, and similar specimens are 
