CIMOLIASAURUS. 27 
In all the lumbar vertebre the abutments of the vertebral aren are fully coossi- 
fied with their body, leaving no well-marked trace of the former sutural connection. 
The spinal canal is wide, and is depressed at the floor towards the middle, where it 
exhibits one or two large venous foramina. In all the specimens the transverse 
processes have been broken off, but in all, their remaining bases are seen projecting 
from the lower part of the side of the body. They spring from nearly the whole 
width of the body, with which they were completely coossified, though they pre- 
sent the appearance as if they formerly possessed a sutural attachment. They 
were evidently robust and strong, and were directed obliquely outward and down- 
ward. 
The sides of the body of the vertebra form, together with the sides of the verte- 
bral arch and the upper part of the transverse processes, a nearly uniform slope, 
broken only by a slight elevation formed by the apparent sutural coossification of 
the transverse process with the body. The under part of the body between the 
transverse processes nearly forms a level surface, more or less elevated into a ridge 
between the venous foramina, and depressed along a line with the position of the 
latter. 
Measurements, derived from the largest and the smallest of the series of eleven 
lumbars, are as follows :— 
LARGEST. SMALLEST. 
Lines. Lines. 
Length of body : : : : : A ; ; : ss 24 
Breadth of articular surfaces. 5 : c : : : . 44 31 
Height of articular surfaces. : 3 : : : : . 386 22 
Width of spinal canal , c 3 : é . : F eo 8 
The vertebrae, above described, were briefly noticed a few years ago in the Pro- 
ceedings of the Academy of Natural Sciences, volume V, page 325, and referred 
to a Reptile under the name of Cimoliasaurus magnus. 
Fourteen vertebre of the same Saurian as the preceding have been submitted to 
my inspection by Mr. O. R. Willis, through Prof. Cook. They all evidently be- 
longed to the same individual, and were obtained from the Green-sand, near Free- 
hold, Monmouth Co., N. J. Six of the specimens are dorsal, the remainder lumbar 
vertebrae. Of the former, three appear to have had their transverse processes at the 
conjunction of the vertebral arch and body; the others had them situated succes- 
sively lower on the sides of the body. 
Two of the more anterior dorsals are represented in Figs. 1, 2, 3, 4, Plate VI. 
They exhibit a slight want of symmetry, which is the case also with another ante- 
rior dorsal, but this character is a deformity, or mere individual peculiarity. The 
body is a little longer and higher, in relation with the breadth, than in the dorsals 
above described, and hence presents a more cylindrical form. The articular extremi- 
ties are moderately dished, and have a somewhat prominent annular margin. 
They are nearly circular, but notched above, and are sharply defined by a subacute 
' ridge from the rest of the body. The bottom and sides of the latter are narrowed 
towards the middle or are concave longitudinally, and they present a number of 
foramina, varying in size, which communicate with venous channels opening into 
