258 MEMOIRS OF THE CARNEGIE MUSEUM 
hind feet are also quite broad, but somewhat longer than the fore feet, while the 
ungual phalanges of the former had apparently a power of retractility equal, or 
nearly equal, to that of the latter. Altogether the skeleton shows a long and com- 
| paratively slender body, long tail, and short and heavy limbs with broad and short 
feet. 
MEASUREMENTS OF SKELETON. x 
m, 
| Greatest length of vertebral column, the skull and all curvatures included ...............sceceeeeneseees 210 
7 Length of vertebral column, atlas to posterior end of sacrum .. 92 
| Length of tail, approximately . 88 
Length of lumbar series 26.5 
j Length of dorsal series 33 
| Length of cervical series... 21 
| Height of skeleton at first dorsal .. 57 
i Height of skeleton at first lumbar 61 
58 
Height of skeleton at supra-iliac border, approximately.. 
Norrs on Inpivipuan Variation or Daphenodon. 
H 
| 
{ 
The superior dentition of the material at hand shows very little variation in 
\ general character, except in the young individual (No. 1589a) found with the type 
of Daphenodon superbus and described on pages 210 and 215. The mandibular 
symphysis in some individuals however, is, longer, pz has been dropped out and the 
alveole closed up, while my is sometimes inserted by two strong fangs. 
In a series of cervicals (No. 1589b), the fourth, fifth, sixth, and seventh, which 
were found on the surface and in the talus at Quarry No. 3 (Agate Spring Fossil 
Quarries), are seen some differences from those described of the type of Daphanodon 
superbus. These differences are most likely due to individual variation and sexual 
distinction, and will be thus treated in this connection pending the discovery of more 
material. 
This cervical series is in the first place considerably heavier and pertains to a 
larger individual than the type specimen. Secondly, the ventral keels appear to 
terminate posteriorly in a more condensed rugose tubercle approaching more nearly 
that of Canis in its characters than to that of the type of Daphenodon. Thirdly, the 
anterior projection of the transverse process of the sixth cervical vertebra in the 
series under consideration is much smaller than the corresponding portion in this 
vertebra of the type specimen. One of the more significant differences from the 
latter is seen in the sixth and seventh cervicals. ‘The base of the neural spine of 
the seventh cervical is more nearly oval in cross-section, with no such excavations in 
front or back of the spine as is characteristic of the type specimen described above. 
The base of the spine of the sixth cervical is also without these excavations, so that 
