Correction Concerning Castoroides Georgiensis, So Called. 103 
CORRECTION CONCERNING CASTOROIDES GEOR- 
GIENSTS, SO CALLED. 
The readers of the JouRNAL of the Cincinnati Society of Nat- 
ural History may remember an article in a recent number (April, 
1890), in reference to a supposed new species of rodent of great 
size. 
I now owe it to the readers and to science to reconsider what 
was then published. 
Fortunately it is not so difficult for a correction to overtake an 
error in the line of science, as for the truth to catch up with the lie 
in politics or the tale of scandal. 
A large tooth, which was figured and described as the left upper 
incisor of a new species, C. georgiensis, has been pretty satisfactorily 
determined to bea right lower canine of a hippopotamus, and 
probably not a fossil at all. 
I had on hand, at the time said tooth came under notice, the 
study of some fine newly-found incisors of C. ohzoensis. The won- 
derful similarity of this Georgia tooth (said on good authority to 
have been dug from a forsaken gold mine) in certain respects, as 
curvature, fluting, finer surface markings, large persistent pulp cav- 
ity, reaching fully half the length of the tooth, and a crown beveled 
back at a sharp angle from the extremity of the outer curve, all 
conspired, with other points of similarity, to mduce me to decide 
it to be a remnant of a very large rodent, probably a Castoroides, 
but very different from C. ofzoensis, the only species known. I was 
confirmed in this view by a deservedly very high authority, who saw 
a pencil sketch, life size, and an excellent photograph, half size. 
These, of course, did not give him the advantage which a glance 
at the specimen would have furnished. I am mainly indebted 
to Prof. E. D. Cope, to whom I showed the tooth, for correcting 
my error. 
It yet remains to search out the source of such a tooth from an 
unfrequented section of Northern Georgia. 
Jos—EPH Moore. 
