MAMMALS-MARTINAE—PUTORIUS FRENATUS. 
175 
General dimensions. Specimens in alcohol. 
Inches. 
Lines. 
Inches. 
Lines. 
Inches. 
Lines. 
Nose to-occiput---- 
2 
9 
1 
11 
1 
to PVO 
7 
to ear ___________ 
13 
12 
to root of tail_____ 
11 
8 
7 
2 
6 
to end of outstretched hind legs_ 
14 
2 
9 
8 
8 
2 
•Tail, from root to end of vertebra?._.. 
6 
9 
3 
7 
3 
1 
from root to end of hairs_ 
7 
10 
4 
3 
U 
Ears, height internally above skull _ __ ___ 
5 
4 
•a 
3 
■width at base___ _ 
10 
9 
Arm, between claws across shoulders_ 
10 
3 
“2 
length of humerus_ 
1 
from elbow to end of claws_ 
2 
6 
1 
10 
1 
fore foot ._..___ 
1 
3 
1 
8 
Leg, from knee joint to end of claws_ 
3 
8 
4 
2 
tibia_...___ ___ 
1 
10£ 
1 
1£ 
1 
hind foot from heel to end of claws... 
1 
9 
1 
1 
1 
This species is readily distinguishable from its American congeners, except P. xanfhogenys , 
by the singular patch of yellowish white on the forehead, and another anterior to each ear. It 
is quite abundant about Matamoras and Brownsville, Texas, although it does not appear to 
range further north, at least it has not been noticed in Texas except on the Rio Grande. Mr. 
Clark procured a very fine specimen at Ringgold Barracks. 
A specimen from the city of Mexico agrees rather better with the description of Lichtenstein. 
The head is black considerably behind the ears ; the under part almost pure white to the 
middle of the belly, where a reddish tinge is visible. In size it is much less than Rio Grande 
specimens, the feet not more than half as large as No. 200. 
The following are the measurements of the specimen described by Lichtenstein. 
Measurements. 
Inches. 
Lines. 
Length from nose to tail__ 
11 
6 
Tail to end of vertebrae___.... 
6 
4 
Tail to end of hairs _ _ . _ _ 
7 
2 
Hind foot from heel ______ 
1 
7 
