MEDIAL 
Froc. Boy. Socy. of Edin. ] 
CRANIAL 
[Vol. XXIX. 
A.C. 
* VII S. V.C.L. A.S. 
C.B. 
Ma. 
M. 
Ch.T. 
CAUDAL 
Fig. 3. 
Mr Ray F. Coyle. 
Fig. 4, 
[Plate IL 
