ESPECIALLY MYCTOPHOIDS 39 
separates the parietals and the epiotics. The rear face of the supraoccipital gives 
rise to a small backwardly projecting crest which does not extend above the plane of 
the skull-roof. 
spo inf.s.c 
pto 
epo 
pa soc eee 
Fic. 16. Czimolichthys levesiensis Leidy. Neurocranium in dorsal view. The broken line 
on the right side of the figure indicates the course of the sensory canals. From 
B.M.N.H. number P.1811. 
