60 FLORIDA GEOLOGICAL SURVEY-NINTH ANNUAL REPORT. 
U. S. National Museum, the ratio of the length of the anterior lobe 
to the length of the tooth is slightly less than the fossil. In 
three specimens of C. occidentalis the percentages were 70.9; 66.6; 
64.5. In four Indian dogs they were 63.8; 62.5; 62.1; 65.6. 
In this fossil the transverse extent of the sockets for both the 
first and the second molars is greater relatively to the first measure¬ 
ment in the succeeding table than in nearly every specimen of 
coyote, wolf, and domestic dog. Here again the fossil approaches 
C. latrans No. 38462 more closely than it does any of the others, 
being in the fossil 39.5 to 100; in C. latrans, 37.7 to 100. The 
teeth themselves must have been somewhat broader than in the 
existing species examined. On the other hand, the inner root of 
pm 4 is narrower fore-and-aft than in any of the recent skulls exam¬ 
ined. 
The following measurements are presented: 
MEASUREMENTS OF TEETH OF COYOTES. 
Distance from front of 
socket for pm 3 to rear 
7036 
Fossil 
216723 
Wyoming 
155597 
Arizona 
59896 
Arizona 
38462 
Minnesota 
of socket for m 1 - 
40.0 
44-5 
42.0 
37-0 
45-0 
Length of pm 4 
18.0 
21.5 
20.0 
18.0 
21.5 
Width of pm 4 at front— 
9.0 
9.4 
10.0 
8.2 
10.0 
Width across main cusp 
Fore - and - aft distance 
across outer sockets 
7.8 
7-5 
7.2 
5-8 
8.6 
of m 1 _ 
Fore-and-aft diameter of 
10.0 
12.0 
11.0 
9.6 
13.0 
inner socket of m 1 - 
Distance from inner to 
outer side of socket 
5 -o 
7-5 
7.0 
7.0 
7.0 
of m 1 ___ 
From front to rear of 
15.8 
16.0 
13-5 
12.5 
17.0 
sockets for pm 3 
11.0 
12.0 
11.2 
10.0 
12.0 
In general the carnassial of the Florida specimen is shorter in 
relation to the. length of the two hinder premolars and the two 
molars and at the same time thicker than in the other skulls exam¬ 
ined; but in the Arizona coyote, No. 155597, the width in front is 
relatively the same, being one-half of the length of the tooth. 
The carnassial of the fossil has been compared with that of two 
domestic dogs Nos. 216646 and 216651 of the National Museum. 
