59 
ing the lower or parotic limb), which is connected by a 
lhgament with the skull at the region of the junction of 
the pterotic and opisthotic. In the Sole, according to 
Cunningham, the forking is more marked, end ihe lower 
limb is connected with the opisthotic only. The post- 
temporal in the Plaice is tunnelled by the lateral sensory 
canal. 
Scapula (Sc.)—A thin plate, which for some time 
remains largely cartilaginous, but which is completely 
ossified in very large fish, having an oblique shelving 
articulation with the clavicle. Almost one-half of its 
outer surface lies internal to, and articulates with, the 
clavicle. It is perforated by the usual scapular fenestra 
for the R. ventralis of the first spinal nerve. 
Coracoid (Co.).—Consists of two parts which are, how- 
ever, continuous: a dorsal part (corresponding to the 
meso-pre-coracoid of W. K. Parker*), which calcifies late, 
is thicker than the ventral part, and gives articulation to 
fin rays; a ventral thin laminate part (the coracoid of 
Parker) which calcifies early and projects downwards for 
some distance as a ventral spine. Owing doubtless to the 
long articulation with the clavicle the connection between 
these two bones is here a simple and not a shelving one as 
is the case with the scapula. The ventral part of the 
coracoid is absent in the Sole according to Cunningham’s 
figure. 
Brachial Ossicles.—These are doubtless absent, but 
may be represented by three structures: (1) a wedge- 
shaped piece of cartilage attached mostly to the coracoid 
but partly also to the scapula (ep. fig. 8)—this is present 
in the Sole according to Cunningham’s figure; (2 and 3) 
two sub-cartilaginous pads, one of which works over the 
free surface of (1), and the other the free surface of the 
* ‘« Shoulder Girdle.’? Ray Society, 1868. 
