182 PROF. D. M. S. WATSON AND MR. E. L. GILL ON THE 
Fig. 17. 
Sagenodus. Bones of the shoulder-girdle. A, right post-temporal, outer .surface; B, the 
same, inner surface ; C, right cleithrum, outer surface; D, the same, inner surface ; 
E, right clavicle, upper (chiefly internal) siu-face; F, the same, lower surface; 
G, right clavicle, imperfect, to show the craclis which result from the flattening of 
the boue. In E and F the bones are represented as flattened, but without the 
cracks. X 5. 
(The elements of the shoulder-girdle are seen in natural association in fig. 19, p. 185.) 
