NO. 121G. 
MAMMALS OF VENEZUELA— ROBINSON AND LYON. 
147 
There is some variation in the sizes of the skull and teeth of the 
crab-eating- dogs along- the northern coast of South America, as is seen 
by the following- table: 
Measurevients. 
.£3 
^1 
So 
xi 
^ 
.13 
f 
■S 
|3 
OJ 
s 
Qj'5 
C 
a> 
be 
is 
Locality. 
bo 
C 
2 
^ 
S2 
ft 
o 
9 tif° 
si 
si 
3 OS 
03 
5.5 'o 
a ;z c 
"3 
i 
be 
36.8 
to 
a 
OS 
IS 
1° 
San ta Marta, Colombia ' 
123 
G4 
42.8 
19 
- 
61 
94 
14 
9.8 
11.6 
do-' 
122 
74.6 
48 
42 
22.8 
63.6 
104 
12.2 
9 
10 
can Julian, Venezuela 
123 
7fi 
45 
43 
20.2 
65 
107 
13.2 
10.4 
12.2 
Maturin, Venezuela 
122 
74 
45.5 
37.5 
21.8 
65 
105 
13.2 
9.4 
10.4 
British Guiana 
74 
36 
21 
65 
101 
14.2 
9.8 
12.2 
1 Bangs's collection, No. 8002. 
2 Type of Uroci/on aqidUis Bangs, Bangs's collection, No. 8001. 
Mr. Bangs's specimens from Santa Marta have a slightly gra3'er 
color and the hind feet are rather smaller. The material is too limited 
to form definite conclusions on the local forms of this dog. 
15. PUTORIUS AFFINIS (Gray). 
SOUTH AMERICAN WEASEL. 
Local name: Huron, the Spanish for ferret. 
1874. MuMela affinis Gray, Ann. and Mag. Nat. Hist. 4th ser., XIV, p. 375. 
1896. Putorius affinis Merriam, N. A. Fauna, No. 11, p. 31. 
A young male was shot at San Julian as it ran over some bowlders 
in a ravine. Its eyes shone with the same greenish light as do the eyes 
of our common weasel, and it emitted the same strong- odor. 
The specimen, identified by Mr. Oldfield Thomas, measures: Length, 
431: tail 168; hind foot, 51. 
i6. DESMODUS ROTUNDUS (Geoffroy). 
VAMPIRE, OR BLOOD-SUCKING BAT. 
1878. Desmodus rvfus Dobson, Cat. Chiropt. Brit. Mus., p. 547. 
1900. Desmodus rufus J. A. Allen, Bull. Amer. Mus. Nat. Hist., XIII, p. 87. 
1900. Desmodus rotundus Thomas, Ann. Mus. Civ. Stor. Nat. Genoa, 2d ser., XX, p. 2. 
In the cave at Pena de Mora one specimen of this interesting bat 
was found in a mummified condition. It gave the following measure- 
ments: Forearm, 53; longest finger, 88; thumb with claw, IT; tibia, 
23; foot, U. 
At San Julian the donkeys were l)itten almost nighth^ by bats, but 
although many attempts were made to secure specimens, and rewards 
were ofi'ered for them, none were obtained. The donkeys were usually 
