52 CATALOG OF FOSSIL FISHES IN THE MUSEUM 



front, 5.5. The specimen is of the usual form for this 

 element, and shows the thinning at the lateral margins 

 for overlap by the antero-ventrolaterals. On the inner 

 face the plate is perfectly smooth and bears a low, 

 rounded ridge along the anterior margin, and, extending 

 backward from this down the middle line of the plate, 

 a longitudinal ridge. The outer face of the plate is 

 ornamented, although scantily, with the characteristic 

 tubercles of this species. Original in private collection 

 of Mr. Teller. 



b. Specimens from the Conodont Bed (Genesee); Eighteen Mile 

 Creek, at North Evans, Erie County, N. Y. Collected by W. L. 

 Bryant. 



E 1973 Left marginal plate of cranium, showing sensory canals 



(PI. 13, fig. 4). The plate agrees in form, size and the 



character of its tuberculated ornamentation with that of 



Dinichthys pustulosus, and, in the absence of evidence to 



the contrary may tentatively be placed in this species. 



E 1974 Imperfect suborbital, showing sensory canal. 



E 1975 Incomplete cranial plate bearing sensory canals. 



E 1976 A spiniferous plate. This element is of similar form, though 

 much smaller size, than the one figured by Newberry 

 {Paleoz. Fishes N. Am., 1889, PI. v, figs. 4-5) in 

 Dinichthys intermedius. It is tuberculated on its outer 

 surface, and measures 9.5 cm, in length and 1.5 cm. 

 in width. 



E 1977. An incomplete ventral plate. 



E 1978 Incomplete plate bearing tuberculated ornamentation. 



E 1979 An imperfect plate bearing tuberculated ornamentation. 



E 1983 Imperfect median occipital of cranimn. 



c. Specimens from the Genundewa limestone (Genesee); near 

 mouth of Eighteen Mile Creek, Erie Coimty, N. Y. Collected by Mr. 

 F. K. Mixer. 



