ífca "intonio Álzate." 



MÉXICO. 



Eevista Científica y Bibliográfica. 



líúm. 3. 1901. 



NOTE ON THE RELATIONSHIP 



ROMEROLAGUS NELSONI, merriam 



f Prom a letter to Profesor A. L. Herí era). 



Washington D. G.,U. S. A. 

 Jan. 2, 1901. 



I see in vol. XIV, nos. 9 & 10, page 880 (1899-1900), of the Jíemo- 

 rias y Eevista de la Sociedad Antonio Álzate, that you consider the 

 genus described by Dr. Merriam as Romerolagus 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 

 ^hat in reality Romerolagus is more closely related to Lepus than to 

 Lagomys I endose 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. 

 „ 8 ,, 4 „ ,, ,, ,, Lagomys scJiistaceps, Merriam. 

 ,, 5 ,, 6 „ „ „ ,. Romerolagus 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 



Kevista [1901].— 6 



