140 l'FR<>MYS(MTS. 



Peromyscus (Megadontomys) thomasi Menitiin. I)i<)l. Suivov (;()11. 

 Proc. Biol. 8oc. Wash., XII, p. 116, tig. 20, April oU, 1898. 

 70142. Skin and skull. Old male. Mountains near C'hilpanciniio, 

 Guerrero, Mexico. December '24, 1894. Collected by E. W. Nel- 

 son and E. A. Goldman. Original number 7250. 

 Woll-iuade skin in good condition; skull perfect. 



Peromyscus tiburonensis Mearns. 



True. r. S. Nat. .Mus., XIX, Xo. 1121, p. 720, July 30, 1S97. 

 63186. Skiti and skull. Adult male. Tiburon Island, Gulf of Cali- 

 fornia, Mexico. Deceml)er25, 18J)5. Collected l)v .1. W. Mitchell. 

 Orioinal number 1. Catalogued March 16, 189r». 



Skin in fair condition, recently made into a modern study skin, a small area 

 on the left flank without hair; skull perfect, except for loss of rijjlit malar. 



Peromyscus tornillo Mearns. 



Preliuiinary Diagnoses of New Mammals from the Mexican Border ol the Unitetl 

 State.s, p. 3, March 25, 1896. (Reprinted in Proc. U. 8. Nat. Mus., XVIII. No. 

 1075, p. 445, May 23, 1896.) 



inio- Skinand skull. Adult male. Six miles above El Paso, Texas, 



on the Rio Grande. P\;bruary 18, 18H2. Collected l)y Dr. E. A. 



Mearns, U. S. A., and F. X. Holzner. Original luimber 1458. 



International Boundar}^ Commission. Catalogued April 2.s. isi)2. 



Well-made skin in good condition; skull perfect, except for lo.ss of left malar. 



Peromyscus mexicanus totontepecus Merriani. Biol. Sm-\ rv coll. 

 I'roc. Miol. Soc. Wash., XII, i)p. 120-121, April 30, iS9S. 

 68624. Skin and skull. Adult female. Totontepec, Oa.xaca, .Mexico. 

 .Inly !<;. 1894. Collected by K. W. Nelson and E. A. (Joldnian. 

 Original number 6465. 



Well-made skin in good condition; gkuU perfect, except for slightly hrokt-n 

 basioccipital and right zygoma. 



Hesperomys truei Shufcldt. 



i'roc. r. .^. Nat. Mus , VIII, p. 405, pi. 21, tigs. 1, 5, and S, September 14, 1SS5. 

 = Peromyscus truei (Shufeldt). See Allen, Bull. .\mer. .Mus. Nat. Hist.. \II, 

 p. 229, June 29, 1895. 



^^08- Skin, skull, and skeleton. Adult male. Fort Wingatc, New 

 Mexico. March 14, 1885. Collected by Dr. R. W.Shufeldt.U. S. A. 

 Skin catalogued April 17, 1885; .skull, April 9, 1891. 



Fairly well-made skin in good condition. Right fore and left hind leg used 

 for the skeleton. Skull with both malars absent, antl pterygoids injured. Two 

 right upper and lower posterior molars and last left lower molar missing. 

 Angular process of left half of mandible broken off. Greater part of skeleton 

 seems to be present but mostly disarticulated. 



Type designated by number on page 405 of the original <lcscrii)ti(jn, where it 

 reads "14904," evidently a ndstake for 14954, as 14904 refers in the Museum cata- 

 logue to a Neoloina coUectetl by Doctor Shufeklt at Fort Wingate. 



