October 6, 1914



Mr. Earl Douglass



Jensen, Utah



My Dear Douglass;



In a letter to Peterson by Dr. M.W. Lyon, Jr.  of Washington, he calls attention to the fact that generic name Xenotherium, which you applied to an animal closely related to the modern Monotremes, is preoccupied, having been employed by Ameghino (Ann. Soc. Argent., X 57, page 168, A.D. 1904).  Your paper came out in March, 1905.  In your description you say  In most of its characters it is very much like the living monotremes of the Australian region.  This being the case I take the liberty of suggesting that the generic name Monotremoides would be appropriate and might be substituted for Xenotherium.  I have made diligent search and find that so far as we can ascertain Monotremoides is not preoccupied.  No list of generic names accessible to us including those of Zoological Record, shows that anyone has thought of this name.



If agreeable to you.  I will insert in the next number of the Annals the following:



Correction of a Generic Name.



In my paper entitled 'The Tertiary of Montana', published in the Memoris of the Carnegie Museum, in March, 1905, page 204, I employed the name Xenotherium to designate a new genus