Pentre. 



622 



Pentremites (now Codinites) stelliformis. Owen and 



Shumard, Geol. Wis. 

 ^ 5* ta * Iowa and Minn. pL 



5 A, fig. 16, from the 

 Burlington limestone 

 of Iowa. — XL 



Pentremites subcylindrica, Hall and Whitfield. Pal. 

 13, Ohio, Vol. 2, 1875, page 129, plate 6, fig. 

 13, showing the ambulacral areas, radial 

 plates, and tops of the basal plates. Nia- 

 gara formation^ V h. 



Pentremites 



. Kogers, page 832, fig. 688. Moun- 

 tain limestone in the Mauch Chunk red shale 

 formation. (The cup of a stone lily broken 

 from its stem.) XL 



Peplorhina anthracina, Cope. Proc, Acad. Nat. Sci. Phila. 

 1873. Pal. Ohio, Vol. 2, 1875, page 410, plate 35, fig. 6, plate 

 41, figs. 4, 5, 6 (6 not on this plate), plate 35, fi^. 6, fiat, size, a 

 cranium seen from below displaying mandibles, hyoid bone, 

 operculum, etc.; plate 41, fig. 4, dislocated cranium 'from be- 

 low ; above, vomerine teeth ; behind, separated cranial bones ; 

 to the right of middle an operculum ; fig. 5, superior cranial 

 bones. — Newberry says that this fossil animal of the Ohio Goal 

 Measures is not a iisli^ but an Amphihian. — XLLL, 



Periplectrodus compressus, St. John & Worthen Geo. 



Vt 





?(^r\plectroius r^arreni^St.l 



