490 U. S. P. R. R. EXP. AND SURVEYS—ZOOLOGY—GENERAL REPORT. 
List of specimens. 
5 | Measurements. ‘ 
=a ] ~ = 
en | a 3 = 
ale joie a kee = 3] hae 
5 SREB e Locality. Whence and how obtained. | Nature of spe- a > 2 = = 3 5 
= alo arth, 6 = . oe 5 =| = 2 Ss 
ai = fire VRE cimen. Si) ont 8 | S = a = a | o 
Sess = eS | 6 3 | s = pare po S s |e 
a jc = r) ) ° o S 
Shae Cane g S 2 = s s Pal bee: 
3 = re | @ | Cr] Pte 9 & to ig we = = 
Sit |e A a | @ A = 5 =] = kf pe 
oo o | o S Ss Fee Te Be oe o ce o 
oO |o Ja] fe |e |e ee | ee ee x 
| ee | I ST 
| | | ] | | 
riot Pee «.+.| Rockland Co., N.Y... John G. Bell....... Wereaas Mounted ....|+.++++ | anos-es|\soce as | 8.02 | 5.55 |....00 1.54 |... ed ee) 
82 |? 144 |....| Charleston, 8. C..... | J. J. Audubon...... secceee| SKIN«.... .../eoceee Jesseeeleeenes 6.85 | 4.85 |..c008 1.46 1.55 83 | .80 
282 |7:978 |....| Georgia.....-..ss000- owen GOs Anais Bdeivcsoweed thy Al eeweds | sc antve'lonatew’ 6.38 | 4.05 |....06 1,32 | 1.70 | .90| .75 
++es..| 2056 |....| St. Simon’sisland, Ga.| J. P. Postell..... ; 
cate ur dO... cceeuscvccssncnce 
Dr. S. W. Wilson. 
eovens Oss es ccsnievecssmussnis 
eceees dO. cccccevesves 
sepeee do.. 
eeere do..5-.. | 
2677 |..... |....| Indian river, Fla. ...| G. Wurdemann......... Zeslbi en alcohol... see Baas snes boos. 6.40] .70 | 1.38 |...0.-| canons] 
2678 | 1682 |....| Washington, Miss....| Col. Wailes...-...sseeeeees oe DOvccccvece eee ae 200 [1.00 | oeeesfowsame eae 
? 449 | 1583 |.... Antelope Hills, Ark..| Capt. Whipple, U.S. A.*...| Mounted ..../.....- Jesccn= jensees |-5.75 | 4.12 |...... 1.35 | 1.65 |......| .69 
QOS1 | ceveee Q | Fort Riley, K. T..... Dr. W. A. Hammond....... SKin...secceslevcees {iste ana Lessee | 9.00’ | 500}! ..cceloacsnctliseccs| Reena sees 
| ' 
> 1 Collected by H. B. Méllhausen ; color, plumbeous. 
NEOTOMA MEXICANA, Baird. 
Bush Rat. 
Neotoma mexicana, Barrp, Pr. A. N. Se. Phila. VII, April, 1855, 333. 
Neotoma floridana, Gxorrroy, Voyage de la Venus, Zoologie, 1855, 154; pl. xiii. 
Sp. Cu.—Ears very large. Feet small. Tail three-fourths (?) as long as the head and body, covered with stiff hairs, so as 
to conceal the annuli. Fur long and very soft. 
Cclor.—Above, light yellowish brown, lined with dark brown ; on the sides clearer fulyous. Feet and under parts white. 
Of two specimens of this species the largest is about the average of WN. floridana, or less. 
The whiskers are longer than the head, mixed gray and black. The ears are very large, larger 
than in either N. floridana or micropus ; they are thin and coated scantily with short hairs, so 
as 1o appear nearly naked. The tail in the larger specimen is broken off; in the smaller it is 
longer than in NV. micropus and more thickly haired, longer even than in N. floridana. The ~ 
feet are small, as in NV. micropus ; the third and fourth fingers longest ; the claw of the second 
reaching to the end of the third finger; the fifth claw beyond the base of the fourth; the 
second and fifth being thus but little shorter than the third and fourth. The palms are naked. 
The first toe is very short, scarcely extending beyond the base of the second ; the second, third, 
and fourth are equal. and longest; the fifth claw reaches to the base of the fourth; the soles 
are hairy towards the heel; naked towards and under the toes. 
Color.—The upper parts generally are of a pale yellowish brown, or even brownish yellow, 
much lined on the back with dark brown ; the former, however, very decided on the sides, which 
are still more distinctly colored along the line of junction of the white of the lower parts. The 
outside of the legs are like the rest of the sides ; the feet and whole under parts white, with a 
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