Ptert. 



808 



(Owen). — See Prof. E. D. Cope's reraarks in American Natur- 

 alist, Dec, 1886. — IX. {See iigtire on page 809.) 



Pteriehthys ? rugosus. CJaypole. This fine fish-plate was 



Vlll,g 



Clai/pole.T.A?. 



Pterinea brisa, Hall. 



< found by Mr. Carter in 



Susquehanna Co., Pa., and 



referred by Prof. CI ay pole 



to Dr. Newberry^ who had 



fragments which might 



^^"'|^% 1 belong to the same species. 



Pff 2f r^^^? M^i: Prof. Whiteaves of the 



%t^'>^4nM^"i ^ ' Canadian survey also con. 



^^^^^i" sidered it unde scribed; its 



nearestresemblance being 

 l^i ; to one of the back plates 

 ?§& of the European Pterich- 

 ^Jv^ thys, but is too flat. I 

 I may be a belly plate. — 

 F///^,Chemung,or more 

 probably VIII-IX, pas- 

 '^ sage beds into Catskill ibr- 

 '4| mation,or lower Catskill, 

 equivalent to the British 

 lOld Red Sandstone. 

 K (Note. Figure from pho- 

 tograph from plaster cast. 

 ? 3 A small figure of Pterich- 

 ^ thy'^s milleri from Sailer 

 & Davidson's chart is 

 added for illustration.) 



mi 



Fig. from Collett's Indiana Report 



:2c of 1881, page 316, plate 27, 

 figs. 24, 25, Plate 28, figs. 7 

 to 9. 



