RKITHRODONTOMYS. 115 



:i281. Skull. Between Janos and San Luis Springs, State of Sonora, 

 Mexico, near l)ordcr of (Jrant Count}', iSew Mexico. Collected by 

 Dr. C. B. Kenuerly, under the command of Maj. ^Y. II. Kniory. 

 U. S. A. Catalogued November, 1855. 



Skull perfect except for loss of both malar bones. There should he a skin, 

 No. 1039, which can not.be found. 



No type specified, but Baird's description is evidently based upon the above 

 specimen, designated by number. The skull of the above is figured. He had 

 one other specimen, an alcoholic, now lost. His brief diagnosis says, "Hind 

 foot near .70." No. 1039, in the table of measurements, is put down as .68, 

 while 1040, the alcoholic, is .50. Evidently the diagnosis was based on No. 

 1039. In Report Ignited States and ^lexican Boundary Survey, Part 2, page 43, 

 1859, No. 1039 is alone spoken of. 



Reithrodontomys merriami Allen. Biological Survey collection. 

 Bull. Amer. Mus. Nat. Hi.«t., VII, pp. 114, 119-120, May 20, 1895. 

 Hill- Skin and skull. Adult male. Austin Ba3'oa, near Alvin, 

 Brazoria County, Texas. March 15, 1892. Collected by W. Lloyd. 

 Original number 1162. 



Well-made skin in good condition; skull lacking posterior half and entire 

 underside of brain case. 



Reithrodontomys microdon Merriani. Biological Survey collection. 

 Proc. Wash. Acad. Sci., HI, pp. 548-549, November 29, 1901. 

 76923. Skin and skull. Adidt female. Todos Santos, Guatemala. 

 December 31, 1895. Collected by E. W. Nelson and E. A. (Gold- 

 man. Original number 8977. 



"Well-made skin in good condition; skull perfect. 



Reithrodon montanus Baird. 



Proc. Acad. Nat. Sci., Phila., Vll, p. 335, this paper was reptirted favorably 

 for j)ublication April 24, 1855. 

 = Reithrodontomys montanus (Baird). See Allen, Bull. Amer. Mus. Nat. Hist., 

 V, p. 80, April 28, 1893. 



,Vff 6 • Mounted skin, and skull. Near the upper end of the San Luis 

 Valley, Saguache County, Colorado. August 29 or 30, 1853-54. 

 Collected by Mr. Kreutzfeldt, on Capt. E. G. Beckwitlrs expedi- 

 tion from Westport, Missouri, to the Pacific coast in 1853-54. 

 . (The.-^e data are taken from J. A. Allen, Bull. Amer. Mus. Nat. 

 Hist., VII, pp. 124 and 125, May 21, 1895.) Catalogued January 

 17, 1855. 



Mounted skin in rather poor condition; body doubled up; both fore legs 

 missing. Both hind legs i>re.<ent, but one is detached from the body; tail also 

 detached, but present. Skull with both malars gone, a hole in the left parietal, 

 and the right angular process of the mandible mis.-^ing; otherwise in good con- 

 dition. 



Type not designated by number iq^the original description, but the single 

 specimen is referred to by number iu Baird's Mammals of North America, page 

 450. 



