MAMMALS—MARTINAE—PUTORIUS FRENATUS. 175 
General dimensions. Specimens in alcohol. 
Inches. Lines. Inches. Lines. Inches. Lines. 
INORe:tO) OCCipn tar ee ceneee seamen ae oo 2 9 1 11 | 1 84 
LY RV Eboor ince So teceee oorecroseectietenes| Seo nererod Rare ae eee | ee ee 9) WWkeoroeecse 64 
to ear .--------------------.--------~---|----------|-2--------||---------- PSS \\eaee anes 12 
tO TOOWOL matte een aie 11 7 2 6) Nee 
to end of outstretched hind legs --....__--- 14 9 8 8 2 
Tail, from root to end of vertebre......-----__-_ 6 9 3 7 3 1 
from root to end of hairs......--..-----..- 7 10 ey eee 3 43 
Ears, height internally above skull ._....-...---|.--------- (an) |e | CN eae eee 3 
WidtttntQweeet 5 O00 A fi | eked 2 eco ee gene eee hs <alaSie) af asides RR 63 
Arm, between claws across shoulders....-------- | 10 o.) WWeee menace atone an eel laaes akc aee|secceasaee 
length’ of thamerus).--- 422... s2-2-22.556- 1 BR Re = ee oe ena cee || pero ase ae Sees = 
from elbow to end of claws--------------- 2 6 1 10 1 63 
Rrmepinop set seat cote. OME 3 LL Le 3 Bhp gle dere ah tells eee oa 8 
Leg, from knee joint to end of claws -----_------ 3 8 2 4 Bu” Noes ceases 
WDA maaan aa as ans sa casnas Sel eee 1 103 1 13 aes 
hind foot from heel to end of claws.--------) 1 9 1 4} 1 1 
This species is readily distinguishable from its American congeners, except P. xanthogenys, 
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 
Wail to:end, of yertebrss=-- -=s-2-5-sasheseeoees 6 4 
MeCN T LOPE HU! Ole BINS Seen cy ee Se eee 7 2 
ead Toowwrom heel! 2>. 2. 352k -fea5 82 hee 1 ai 
