I lO Bulletin American Museum of Natural History. [Vol. XIV, 



in point of size, and although many teeth from different localities 

 have been referred to it, there is no assurance as to their refer- 

 ence. 



Among the teeth subsequently referred by Leidy to E. com- 

 plicatus yvevG those on which Cope founded his species (21) E. 

 intermedins (= E. eons, Hay) found at Petite Anse, La., not over 

 100 miles distant from the type locality of E. complicatus ; they 

 belonged to an old individual, and the differences are principally 

 age characters; Leidy was probably correct therefore in his pre- 

 vious reference of these types to E. complicatus. 



(5) Equus fraternus Leidy. 



Type Locality. — Near Charleston, S. C. 

 //(7r/2o«.— Phosphate Beds. 

 Type. — Superior p^. 



AutJwrs description. — As has been pointed out by Cope,' when 

 Leidy first named this species he gave no description by which it 

 could be distinguished, simply stating that " its remains are un- 

 distinguishable from the corresponding parts of the recent horse, 

 and are the representative of the E. primigenius of Europe, and 

 may be distinguished by the name of E. fraternus." He after- 

 ward figured and described a number of teeth from near Charles- 

 ton, S. C.,'^ referring some of them to this species and others to 

 E. complicattis . From the teeth of this collection designated by 

 Leidy as E. fraternus., Cope selected a tooth (No. 6, PI. xv, H. 

 P. S.) as the type of E. fraternus. Quoting from the publication 

 referred to, he says: " The superior molar which is first described 

 is figured on PI. xv, Fig. 6, of that work (Holmes's Post- 

 Pleiocene Fossils of S. C). Unfortunately the protocone of that 

 tooth is largely broken off, but enough remains to show that it 

 had the very small antero-posterior diameter characteristic of the 

 Floridian teeth, and in other respects it agrees with them, except 

 that it is larger than usual. . . . I therefore regard it as the type of 

 the species as described by Leidy." As there are apparently 

 two species represented by the figures designated by Leidy as 

 E. fraternus it is important that the right tooth be selected as 



1 Proc. Am. Phil. Soc, Vol. XXXIV, 1895, p. 467. 



"^ Holmes's Post-Pleiocene of S. C, i860, pp. 100 to 105, PI. xv and xvi. 



