PAA ly 
DINICHTHYS INTERMEDIUS, Newb. (p. 152). 
Fic. 1. Inside of cranium, showing imperfect supra-scapular plates in place, one-half natural size. 
Cleveland shale, Cleveland, Ohio. 
2. Diagram of head and dorsal plates, viz: n, nasal plate; e, ethmoid; po, preorbital; pt o, post- 
orbital; so, suborbital (maxillary? ); pm, post-maxillary; m, marginal; f, frontal; mo, middle 
occipital; eo, external occipital; p, parietal ?; ss,supra-scapula; d, dorsomedian. 
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