SIGMODHN. 109 



Well-made skin in good condition, l)nt ears badly damaged l)y insects; sknll 

 with basisphonoid ami ])tiTygoid region absent; right zygoma broken; right 

 mandibular condyle, coronoid, and angular processes absent. 



Sigmodon berlandieri IJuird. 



Troc. Acad. Nat. Sci. IMiila., VII, p. '^'^'^, this paper was reporteil favorably for 

 publication .\pril 24, ISn"). 

 = Sigmodon hispidus berlandieri (Maird). See Bailey, Proc. Biol. Hoc. Wash., 

 XV, i>. 10(1, .lune 'J, HHrJ. 



lYsS- ^kiii (K)st) and skull. Adult female. Rio Nasas, Coalmila. 

 Mexico. 1S53. Collected by Lieut. D. N. Couch, U. S. A. Cata- 

 logued March 14, 1855. 



The Museum catalogue records that the skin was taken out of alcohol, and 

 that the body is still in alcohol, but neither skin nor body can now be found, 

 and only the injured skull is present. Right zygoma and practically all of the 

 occipital bones and a portion of the right parietal broken away. Right tym- 

 panic and periotic are present, but detached from the re.«t of the skull. 



Type not designated by number in the original description, but by referring 

 to Baird's Mammals of Nortli America, page 505, it is seen that the description is 

 based upon the present specimen, designated by number 56(i. Also see Bailey, 

 loc. rit., page 107. 



Sigmodon hispidus eremicus Mearns. 



Preliminary Diagnoses of New Mammals of the Genera Sciurus, Castor, Neotoma, 

 and Sigmodon, from the Me.xican Border of the United States, p. 4, March 5, 

 1897. (Reprinted in Proc. U. S. Nat. Mus., XX, No. 1132, p. 504, January 

 19, 1>S9,S.) 



60319. vSkiu and skull. Adult male. Cieneu-a well, 80 miles south 

 of moiuiment No. 204, Mexican boundary line, on the left bank of 

 the Colorado River, in Sonora, Mexico. March 21, 1894. Col- 

 lected by Dr. E. A. Mearns, U. S. A., and F. X. Ilolzner. Original 

 number 3367. International Boundary Commission. Catalogued 

 May 8, 1894. 



Well-made skin in good condition; skull jierfect. 



Sigmodon leucotis liailey. Biological Survey collection. 



Proc. P.iol. Soc. Wash., XV, p. Ho, .June 2, 1902. 

 !>2oul. Skin and skull. Adult female. Valparaiso Mountain.s, 

 Zacatecas. Mi^xico. December 2, 1897. Collected by E. \V. Xel- 

 .son and K. \. Goldman. Original number 11812. 

 Well-made skin in good condition; skull perfect. 



Sigmodon hispidus major Bailey. Biological Survey collection. 



Proc. Biol. Soc. Wash., XV, pp. 109-110, .lune 2, 1902. 

 96275. Skin and .skull. Adult male. Sierra de Choix, 50 miles 

 northeast of (!hoix, Sinaloa, Mexico. October 20, 1898. Col- 

 lected by E. W. Nelson and E. A. Goldman. Original immber 

 13154. 



Well-made skin in good condition; skull perfect. 



