58 
the dorsal fin and 46 in the anal. Thus, although the 
physiological result is the same, the means by which it 
has been arrived at do not exhibit a serial agreement. 
11.—PercroraL GirRDLE AND F'n (Fig. 8). 
Clavicle (C/.).—A large curved bone. The upper part 
or handle is the stoutest and bears a thin lamina behind 
for the articulation of the post-clavicle. The cuter face 
dorsally is flattened for the reception of the supra-clavicle. 
Below, the clavicle is connected in the mid-ventral line 
with the clavicle of the other side by a long symphysis. 
Post-clavicle (P.C/.)—A long thin curved bone 
articulating above by its upper enlarged extremity with 
the clavicle, and for the rest lying freely in the superficial 
muscles under the pectoral fin. Its position is partly indi- 
cated externally by a scar on the skin. In one specimen 
examined the post-clavicle was double, the two pieces 
uniting, however, at the clavicular articulation. Accord- 
ing to Cunningham’s figure this bone is not present in the 
Sole. 
Supra-clavicle (S.C/.).—A smal! triangular bone, thin 
below but stouter above. Ventrally it overlaps the 
clavicle, and above it is overlapped by the post-temporal. 
Its upper extremity bears a prominent cartilaginous knob, 
which fits into a deep pit on the inner face of the post- 
temporal. 
Post-temporal (?.7'p.).—This bone, sometimes called 
the ‘‘ supra-scapula,” differs from the usual Teleostean 
type in so far as there are only moderate indications of the 
forking, and there is only one direct articulation with the 
skull. Above and in front there is a prominent articula- 
tion (representing the upper or epiotic limb of the post- 
temporal) with the pterotic and epiotic. Somewhat below 
this, and also in front, is a moderate elevation (represent- 
