PETERSON : NEW CARNIVORES FROM MIOCENE OF WESTERN NEBRASKA 219 
MEASUREMENTS OF FoURTH AND FIFTH CERVICAL VERTEBRA. 
C.4 (O55 
Mm Mm 
Antero-posterior diameter Of Cembra.............4 ceeeseercerrenscereerescccsesccesersceceesesssscsssesers 31 30 
Transverse diameter of centra, posteriorly.. 22 
Vertical diameter of centra, posteriorly... 16 
Transverse diameter across transverse processes, posteriorly.. 59 
Transverse diameter across prezygapophyses, posteriOrly...........s.sseeececeeeceeseeeeeseeese ees 43 
Transverse diameter across postzyQZaPOPHYSeS...........seesessssecesescesccccerseresssereeetessesers 41 39 
Sixth Cervical Vertebra.— The sixth cervical vertebra has the faces of the centrum 
more oblique than in any others of the cervical series, but not more opisthoccelous. 
The centrum is otherwise depressed and rather broad, as are 
the centra of all the cervicals. The ventral keel is quite 
prominent in the anterior region, but fades away to an 
evenly convex border posteriorly and is quite similar to 
that in Canis. The transverse process is very prominent, 
as in the latter genus, but the inferior lamella is divided 
into two parts, a small anterior and a larger posterior por- eee 
tion (see fig. 9). In the thodids this lamella forms a solid — gyq. 9. sixth Cervical Ver: 
and thin blade, while in the alopecoids it is generally  tebra of D. superbus. 3 nat. 
slightly divided. In the cats it is divided in a greater or “”* 
less degree. The vertebrarterial canal is proportionally longer than in Camis. The 
neural arch is broad, but does not form the connecting ledge between the pre- and 
postzygapophyses as prominently as in Canis; there is no excessory process devel- 
oped on this connecting ledge as in the latter genus, though it would appear from 
Professor Scott’s description (J. ¢., p. 388) that these ledges are perhaps more promi- 
nent on the arches of the cervical vertebree in the present genus than in Daphenus. 
The anterior and posterior emar- 
ginations on the neural arches 
which separate the zygapophyses 
in front and behind the neural 
spines of the cervical vertebra are 
deeper than in Canis ; they are not 
unlike those in Viverra africana, 
and in this respect are similar to 
FIG. 10. Cervical Vertebrae of Cynodesmus brachypus Cope (No. 
8 ; ; what was found by Scott to be the 
140Cope Collection, Am. Museum of NaturalHistory). } nat. size. 
case in the Oligocene genus. The 
neural spine of the sixth cervical in the type is slightly damaged, but its entire 
length is represented, and it is shown to be robust and high. 
