MAY 18 is.j 
MEXICO. 
Revista Cientifica y Bibliografica. 
Num. 3. 11)01. 
NOTE ON THE RELATIONSHIP 
OF 
ROMKROLAGUS NKLSQJsTI, MEtiRliiM. 
fFrom a letter to Profesor A. L. Hen era]. 
Washington D. C, U. S. A. 
Jan. 2, 1901. 
1 see in vol. XIV, nos. 9 & 10, page 380 (1899-1900), of the ilfmo- 
rias y Revista de la Sociedad Antonio Alzate, that you consider the 
genus described by Dr. Merriam as Eomerolagus to be nothing more 
than a. Lagomys. This statement has also I believe been made in seve- 
ral other publications. In order to show that this view is incorrect and 
that in reality Romerolagus is more closely related to Lepus than to 
Lagomys I enclose photographs showing upper and under views of 
the skulls of the three genera named. 
Nos 1 and 2 is the skull of Lepus floridanus mallurus, Thomas. 
3 ,, 4 ,, „ Lagomys schistaceps, Merriam. 
„ 5 ,, 6 ,, ,, „ ,. Eomerolagus nelsoni, Merriam. 
By a careful comparison you will notice that the supra orbital pro- 
cesses, the palatal bridge and the incisive foramen are quite similar in 
5 
