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DES. A. CAETE AND A. MACALISTEE ON THE 
The chevron or inferior spinous bones were seven in number, each being composed 
of the two lateral branches which inferiorly coalesced and formed the hsemal spine. Of 
these segments the second was somewhat larger than the first, in which latter, the 
hsemal spine, though less prominent inferiorly, was more elongated posteriorly, with its 
inferior or free edge, in outline, more elliptical ; the hsemal spines of the remainder, 
with the exception of the last, in which it was entirely suppressed, were more or less 
circular, rounded, and decreased in prominence as they receded from the second. These 
bones commenced to be articulated at the intervertebral space between the thirty- 
second and thirty-third vertebrse, and ceased at the intervertebral space between the 
thirty-ninth and fortieth. 
The eight terminal caudal vertebrse were destitute of a spinal canal, which was 
merely represented by a shallow groove, and their centrums were mere bony cubes with 
their angles rounded off. 
The ribs, eleven in number, were bony arcs, thicker, flatter, and somewhat more 
spongy in texture at their sternal than at their vertebral extremities. The heads were 
articulated with the transverse processes of the dorsal vertebrse through intervening 
cartilage, and from each capitulum a bony ridge passed outwards to the angle or tubercle 
on each. 
The head of the first rib was simple and undivided, and its shaft was flatter and wider 
than the others. The fourth was the longest, measuring along its convex border 2 feet 
3 inches, and also the most curved. The heads of all the posterior ribs were marked 
by a slight sulcus, and the fourth and fifth had a distinct tubercle placed about 2 inches 
external to their heads, but this process ceased to exist on the four posterior ribs. 
The sternum was a light flat porous bone, irregularly heart-shaped; it was notched in 
front and prolonged posteriorly into a bluntish extremity. Mr. Flower describes the 
shape of this bone, in the animal examined by him, as being that of an elongated cross ; 
this difference may possibly be due to the different age of the two animals. The first 
ribs alone were articulated to this segment. 
The ischiatic bones existed as mere rudimentary fibrocartilaginous bodies about 6 
inches long, of an arcuated or sigmoid shape, narrowing to their inferior extremities ; 
they were imbedded in the muscles of the abdomen, and were placed perpendicularly 
beneath the first chevron bones. 
The scapula was triangular and flattened, slightly concave on its subscapular aspect, 
where it presented four very superficial diverging furrows; the dorsum was likewise 
slightly concave and perforated by a few vascular foramina towards the neck; the 
external border was rounded and concave, blunt towards the glenoid cavity, becoming 
sharper towards the posterior angle; the posterior or vertebral edge was curved and 
porous, being, in the recent stale, bordered with cartilage; the anterior edge was nearly 
straight and bevelled off obliquely towards the dorsum, forming an extremely narrow 
marginal surface, separated from the proper dorsal surface by a slightly raised edge that 
was bounded at its external third by a prominent flattened recurved acromion process. 
