412 
U. S. P. R. R. EXP. AND SURVEYS—ZOOLOGY—GENERAL REPORT. 
List of specimens. ' 
I Catalogue number. 
0 
0 
S3 
f 
a 
6 
SB 
m 
Locality. 
When col¬ 
lected. 
Whence and how 
obtained. 
| Original number. 
Nature of 
specimen. 
Measurements. 
Collected by— 
| Nose to eye. 
| Nose to ear. 
| Nose to occiput. 
s 
S 
si 
| Tail to end of ver. 
| Tail to end of hairs 
| Fore foot, length. 
i 
a 
I 
a 
4 
I 
m 
Skull, width. | 
1921 x 
<5 
Platte river.... 
Sep.15,1856 
Lt. F. T. Bryan. 
336 
Alcohol... 
.80 
1.40 
1.50 
3.50 
4.65 
5.05 
.50 
1.51 
W. S. Wood.. 
442* 
1307 
Huerfano river. N. M.„ 
1853 
Capt. E. G. Beckwith. 
Skin... „ e „ 
I • 
1.48 
490 a 
1631 
Near Ft. Massachusetts 
1853 
11 
. .do. 
1.75 
4.50 
5.25 6.33 
.50 
491* 
1632 
Llano Estacado, (west¬ 
1854 
Capt. J. Pope... 
4.45 5 25 
1.50 
1.43 
ern part.) 
1 
492 1 
1633 
. .dO...a. 
1854 
4.33 
4.50 5.37 
•4Q 
1.50 
534* 
1854 
4.13 
4.60 
1.35 
I7391 
Pecos river. TV. M. 
May 27,1856 
114 
. .do.. •... 
5.00 
1.44 
1741 1 
June 24,1856 
202 
4.00'5.00 
5.65 
.40 
1.40 
1742* 
July 12,1856 
204 
. .do...... 
4.40 
1.46 
613 1 
1764 
Western Texas..,,,,,, 
1854 
1.26 
.85 
2675 1 
Waco Tanks, N. M.... 
Mar. 13,1856 
5.12 
1.35 
533 1 
Organ mountains,N.M. 
Dr. T. H. Webb. 
..do. 
.90 
1.50 
4.50 
5.25 
1.35 
531 1 
Fort Thorn, N. M 
Dr. T. C. Henrv. 
4.50 
1.45 
532 1 
..do. 
4.62 
4.80 
5.62 
.42 
1.46 
560 1 
1066 
El Paso, Texas..»,,,, T 
Col. J. D. Graham .... 
, .do. 
1.39 
.91 
Chas. Wright. 
1044 4 
2209 
Mesilla Valley..,. „ t ,. 
1855 
Maj. W. H. Emory.. tI 
Mounted. 
1.44 
.95 
Dr. Kennedy.. 
143 1 
1125 
Santa Cruz, Sonora 
Col. J. D. Graham..... 
Skin. 
4.25 
1.46 
1.47 
.97 
J. H. Clark.... 
372 1 
1286 
Dr. T. H. Webb 
2621 1 
Coahuila, Mexico* .... 
Lt. D. N. Couch. 
In ale.... 
.90 
1.40 
1.60 
4.00 
5.30 
5.95 
.55 
1.46 
1 Light yellowish red: D. ordii . 
2 More dusky: D. montanus. 
3 Dusky; white tip to the tail; type of Dipodomys montanus. 
* Rather dusky; tail dusky at the end. 
6 Probably near Santa Catarina. 
DIPODOMYS PHILLIPII, Gray. 
Dipodomys phillipii, Ghat, Annals and Mag. Nat. Hist. VII, 184-0, 521.—In. Sill. Am. J. Sc. XLII, 1842, 335. 
(Real del Monte.) 
Wagner, Suppl. Schreb. IH, 1843, 295. 
Leconte, Pr. A. N. Sc. VI, 1853, 224. (San Diego.) 
Dipodomys phillippsii , Aud. & Bach. N. Am. Quad. JII, 1853, 137; pi. cxXx. (The figure derived from Gray’s 
specimen; description uncertain.) 
? Macrocolus hallicus, Wagner, Wiegm. Archiv, 1846, i, 172.— Ib. Abhandl. K. Baier. Akad. XXII, 1845, 319. 
Giebel, Saugt. 1855, 599. 
Above yellowish brown. Tail very long, much exceeding tbe body ; tbe upper caudal dusky 
stripe extending to the tip, although the hairs here are only dusky at their extremities, the 
principal portion being white; in some specimens entirely white, the lower stripe becoming 
obsolete near the tip. 
Two specimens of what I refer to this species were caught at Posa creek by Dr. Heermann and 
preserved. They are in the state of moult or change of hair, and it is consequently impossible 
to describe accurately their color. The essential conditions of the species appear to consist in a 
thin tail, much longer than the body, the hairs quite close pressed till on the terminal third, 
when they gradually elongate on the upper side to the tip, where they measure an inch in 
length. They elongate somewhat on the under side near the tip, but do not stand out in a 
crest as on the upper. 
