226 MONOGRAPHS OF NORTH AMERICAN RODENTIA. 
TABLE LVII.—Measurements of sixty-eight specimens of ARVICOLA (PITYMYS) PINETORUM—Continued. 
[ S 2 
3 lea 
; Nature of Fo/85 
5 x Date. Locality. Collector. ona | oe Remarks. 
<2} specimen, KY welSe A 
| 4 FF ot 2 3 C) 
5 A °o 3 —— 
4 |e le || eee 
8523 | ft |...do ..-...| Jan. —, 1866 | Neosho Falls, Kans} B. F. Goss ....| 3.25 | 0.60 |.----- 0.69 | Measured dry, 
9280 | & |...do .-.... Mar. 14, ——| Fort Cobb ........| E. Palmer-.... 3.50 | 0.60 |.----. ON65i ees do. 
9279 || g' |--/do .-..-- Apr. 28, —|.-..do .....-.......|.--- GO) pee ssece 3.20 | 0.58 |-..-.. 0:,663)|5acee do. 
3732 |.---}-- Oregon - ..... -.| U.S. Expl Exp | 3.00 |.--.-.].----- 0.60 |...--. do. 
7568 |... = | Unknown ..-.......| Unknown..... S550 NONGod| eases 0.65 | Measured in alcohol. 
SEPT eel ee TN Real Be 5 A ee eek 55 on! S dont. 3225) | 10; 70) 2-2 =: 0:62!) Seae-- do. 
TAGE nS ae IS DOSE COIS TUS CDSS RCS OSSEnTERoGe caOgroce unmso ne Sooe 3.60 | 0.70 | 0.36 | 0.63 
ARVICOLA (PITYMYS) QUASIATER, Coues. 
Arvicola (Pitymys) pinetorum var. quasiater, CouES, Proc. Acad. Nat. Sci. Phila. 1874, 191. 
Cuars.—Arvicola imaginem A. pinetorum reddens, vellere curto, denso, 
sericeo, e fusco nigricante, auriculis modicis, sparse pilosis, rotundatis, vellere 
longiusculis, antitrago exiguo; manu dimidium pedis, caudd brevissima vix 
pedibus longiore. Long. trunci 433, caude 0.70, mantis 0.33, pedis 0.66. 
Hasrrat.—Mexico. Xalapa (De Oca). Tuxpango (Sumichrast). 
In general form and appearance, this animal somewhat recalls 4. pineto- 
rum, particularly the larger darker styles of the latter, formerly called 
‘‘scalopsoides”, and we judge that it will be found to fall under Pitymys, from 
the circumstance of its sharing many peculiarities of external form ; but this 
we cannot affirm without an examination of the skull and teeth, which we are 
unable to make without an unjustifiable mutilation of the two beautifully pre- 
pared skins before us. But although it is thus, by its mole-like aspect, allied 
to pinetorum, it is not sufficiently similar to that species to be confounded 
with it; and it does not bear the slightest resemblance to any other North 
American species we know of. At first glance, the animal looks quite black ; 
but on closer view this color is seen to be lightened by an auburn shade, 
owing to a uniform and intimate mixture of dusky-chestnut hairs with the 
black ones. There are no markings anywhere; the general color changes 
insensibly on the sides into blackish-ash on the under parts, lightly silvered 
over with hoary. The tail is like the back above, and indistinctly paler under- 
neath. The fur is very short, fine, and close, and of so rich a silky lustre 
that, in some lights, it gives an appreciable purplish coppery iridescence. 
The body is very stout and compact, and all the members are small. The 
tail is much shorter than the head, and barely longer than the hind foot. The 
