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224. MEMOIRS OF THE CARNEGIE MUSEUM 
Eleventh Dorsal Vertebra.—The centrum of the eleventh dorsal vertebra is 
longer and also of slightly greater vertical diameter than is the case in the preced- 
ing vertebra and, as in the latter, there are no facets for ribs 
on the posterior face. The eleventh and twelfth dorsals in 
the skeleton of Daphenus felinus (No. 492) have no facets on 
the posterior faces, although there are instead little rounded 
processes which extend slightly behind the faces of the cen- 
Fig. 17. Eleventh Dorsal tra, but which apparently never touched the heads of the 
of D. superbus. }nat. size. ib. as there are no articular facets noticed on them. 
The characters of the neural arch, zygapophyses, and spinous process are sud- 
denly changed in this vertebra, and are on the whole more like those of the true 
lumbars. The bone is injured in the region of the transverse process, but enough 
is preserved to indicate its rather small size, and it is quite doubtful whether it car- 
ried an articular facet for the tuberculum of the rib as in Canis and other recent 
Carniyora. The meta- and anapophysis are more prominent than in Canis; in fact 
the vertebra as a whole is heavier. Judging from the base of the neural spine it 
was thin transversely and rather broad antero-posteriorly; it did not attain a great 
height, and was perhaps more or less anticlinal. 
MEASUREMENTS OF ELEVENTH DoRSAL VERTEBRA. 
Antero-posterior diameter of centrum. 
Transverse diameter of centrum 
Vertical diameter of centrum, approximately. 
Transverse diameter at transverse processes... 
Height of neural spine, approximately 
Twelfth and Thirteenth Dorsal Vertebre.—The twelfth and thirteenth dorsal 
vertebree increase rapidly in size from the one preceding them. ‘The twelfth is 
characterized by the practical absence of a transverse 
process, there being only a trace of a tubercle present 
near the posterior border of the pedicel immediately 
above the intervertebral notch. On the thirteenth 
dorsal is a decided knob-like transverse process which 
is shifted lower down than on the eleventh. The 
Fie. 18. Twelfth and Thirteenth 
. ; Dorsal Vertebree of D. superbus. 4 nat. 
prominently developed on the thirteenth than on the ij, 
last vertebra mentioned. The meta- and anapo- 
physes are seen to be decidedly more robust in the two vertebre here described 
ventral keel is a heavy rounded ridge and is more 
