ESPECIALLY MYCTOPHOIDS 19 
continuing the curvature of the frontal around the orbit. A shallow ridge passes 
postero-medially from the centre of ossification on the frontal and this is continued 
back on the surface of the parietal. Several small, short ridges extend medially 
ptf 
Fic. 6. Apateodus striatus Woodward. Neurocranium in dorsal view. The broken line 
on the left side of the figure indicates the course of the sensory canals. From the 
collection of the Institute of Geological Sciences, number 26241. 
