A NEW FOSSIL REPTILE. 999 
recessed for the clavicles, and the under surface of the stem is 
also recessed, apparently for the inner borders of the coracoids. 
This implies that the interclavicle largely lay above the coracoids, 
a feature only paralleled by the Plesiosaurs. The evidence for 
this curious arrangement is very much str engthened by the fact 
that the stem is broken, and the lower part with the right 
coracoid underlying it is pressed up, whilst the left coracoid 
retains its natural position in relation to the anterior end of the 
interclavicle. 
The lower end of the left clavicle is well preserved; it is rather 
wide and thick, lies along the anterior border of the head of the 
interclavicle, and shows a very feeble sculpturing of pits and 
grooves. The coracoid and scapula of each side are fused 
together, and only the lower part of the joint-bone is exposed. 
The coracoid is a large flattish bone with curved borders; it bears 
a strong process which carries the lower and posterior part 
of the glenoid cavity, behind which the bone is continued for some 
distance. There is a small, oval, coracoid foramen in the groove 
which continues the glenoid cavity forward. There is a powerful 
rounded supraglenoid process borne by the scapula, and some 
slight evidence of a glenoid foramen. The right scapulo-coracoid 
shows that the whole bone forms about a quadrant of a circle. 
There is no reason to suppose that more than a single coracoidal 
element was present: this being no doubt, as Williston believes, 
the anterior of the two of the Cotylosaur shoulder-girdle. 
Fore limb.—The upper part of the right humerus is shown 
from below; the left humerus is badly exposed, but shows the 
length of the bone and something of its distal end. The bone is 
very slender; it is slightly expanded at both ends, and no doubt 
somewhat twisted. The head is not well exposed; there is a 
short but relatively powerful radial crest which rather rapidly 
subsides on to the shaft. Of the distal end, all that can be said 
is that it is exceptionally well ossified and finished, with a round 
condyle for the radius, facing at right angles to the shaft, and a 
facet for the sigmoidal fossa of the ulna at the end. 
The radius is a long slender bone slightly expanded at the 
ends. The ulna is a slender bone, with the upper end thickened 
and produced into a very pronounced olecranon process. 
Although the carpus is only a centimetre square its structure 
is shown with diagrammatic clearness on the right side, where 
it is exposed on its palmar aspect and has the actual bone well 
preserved. 
There are three large proximal carpals, anda slight suggestion 
of a small pisiform lying a little removed on the ulnar side. There 
are three centralia which completely separate the proximal and 
distal rows of the carpus. The most ulnar of these is very small, 
articulates with the ulnare, median centrale, and fourth distal 
carpal. The median centrale is one of the largest bones of the 
wrist, articulates with the ulnare, intermedium, radiale, radial 
centrale, third and fourth distal carpals, and the ulnar centrale. 
