643 



Physo. 



111., vol. 6, 18T5, page 452, plate 18, figs. Sa, side view of fish- 

 spine, backedge restored ; 5, front face ; c, d, e^ f\ cross sections. 

 Burlington, Iowa. Lower Kinderhook fish bed. XI, 



Physonemus falcatus, St. John & Worthen Geo. Sur. 

 ^^^ in., vol. 7, 1883, page 252, plate 24, figs. 6a, 

 light side of fish spine; h cross section near 

 tip. St. Louis. St. Louis limestone. XI. 



Physonemus gigas, Newberry and Worthen, Geo. Sur. 



,9 b 



111. Vol. 4, plate 2, fig. 1, and vol. 6, 1875, page plate 18, figs. 

 6(35, side view of fragment of large spine, with tuberculose or- 

 namentation ; 5, c, tubercles enlarged; 8 5, front face of a 

 smaller specimen; Gs d^ 6, sections; 9 J, very small specimen 

 (Other figures omitted). Quincy, 111. Upper Burlington 

 lidiestone. XI 



GeoL 



IllitL 



Physonemus parvulus, St. John & Worthen, Geo. 



Sur. 111., vol. 6, 1875, page 453, 

 plate 18, figs. ll(z, side view, re- 

 stored along back face ; 12a, side 

 view and cross section of fishspine^ 

 restored in outline. Boonville, and 

 Warsaw, 111. Rare in the fish-bed 

 horizon of the Keokuk limestone. XI. 



