VERTEBRATA AT VERO. 6 1 
MEASUREMENTS OF CARNASSIALS OF C. RIVIVERONIS AND OF TWO 
DOMESTIC DOGS. 
Length of pm 4 - _ _ 
7036 
18.0 
216646 
16.6 
216651 
17.0 
Width in front 
9.0 
. 8.5 
9.0 
Width at middle - 
6.2 
6.4 
6.1 
Percentage of width at middle to length of tooth 
34-4 
38.5 
39-9 
Width across rear lobe ____ _ 
6.1 
6.2 
6.0 
In the collection made in No. 3, at Vero, is a part of a humerus 
which has the catalogue number 6798. The total length of the 
fragment is 62 mm. Above, it begins on the deltoid ridge. It is 
referred provisionally to Canis riviveronis. 
MEASUREMENTS OF HUMERI IN MILLIMETERS. 
Fossil Coyote Red Fox 
6798 F. G. S. 1326 U. S. N. M. 7550 U. S. N. M. 
Fore-and-aft diameter at lower end 
of flattened part of deltoid ridge- 
14.2 
15 
10.1 
Width at level above named 
9 
9*5 
7 
Fore-and-aft diameter at lower end 
of- fragment and at corresponding 
place in the other species-- _ 
10.4 
11.2 
7-8 
Side-to-side diameter at place indi¬ 
cated above 
9 
10 
7 
It will be seen that the fragment of fossil humerus resembles in 
size more that of the coyote than it does that of the red fox (Vulpes 
falva). The fragment is more compressed at the lower part of the 
shaft than is that of the fox and less than that of the coyote. This 
bone seems to belong to a coyote, probably Canis riviveronis. 
In the collection is the shaft of a left femur, No. 6796, from 
No. 3. The head and the greater trochanter are broken off; also 
the condyles. 
It is here compared with the same bone of the red fox No, 7550 
U. S. National Museum, and with that of a coyote No. 1326 of the 
same museum. 
