80 



the cleft between the roots. The cingulum is angular and prominent at either end, 

 becoming rounded and broader on the sides. The crown is considerably worn on the 

 inner side of its apex. One root only remains and it is imperfect below. 



Measurements. 



M. 



Length of tooth (imperfect below, worn above) • 0080 



,-...» f anteroposterior ' 0047 



JJianieter ot crown < '^ 



(, transverse " 0030 



Height of crown ■ 0040 



SYNOPSIS OF SPECIES WITH PAGE AND PLATE REFERENCES. 





Species. 



Page. 



Plate. 







Pisces. 









1 



Myledaphus bipartitus, Cope. 



28. 



XIX. 





2 



Acipenser alberlensis, Lambe. 



29. 



XXL 





3 



Lepidotus occidentalis, Leidy. 



29. 



XIX. 





4 



Rhineastes eruciferus, Cope. 



29. 







5' 



Diphyodus longirostris, Lambe. 

 Batrachia. 



30. 



XV. 





6 



Scapherpeton tectum, Cope. 

 Reptilia. 



31. 



IIL 





7 



CimoUasaiirns magnns, Leidy. 



32. 







8 



Trionya: /oveatns, Leidj'. 



33. 



I, and figures in text. 





9 



Trionyx vagans, Cope. 



3G. 



I, and figure in text. 





10 



Adocus lineolatus, Cope. 



38. 







11 



Adocus variolosus, Cope. 



39. 



II, and figures in text. 





12 



Neurankylus eximius, Lambe. 



42. 



Figure in text. 





13 



Ba'cna haicheri, Hay. 



43. 



Figure.s in text. 





14 



Baena antiqua, Lambe. 



44, 



Figures in text. 





15 



Champsosaurus anneclen.% Cope. 



4.5. 







16 



Troodon fonnosus, Leidy. 



47. 







17 



Crocodilus humilis, Leidy. 



47. 







18 



Bottosaurus perrugosus, Cope. 



48. 







19 



Deinodon luyrridus, Leidy. 



49. 







20 



Deinodon explanains, Cope, sp. 



49. 



XV. 





21 



Ornithomimus altns, Lambe. 



50. 



XIII, XIV, XV, and figures in 



text. 



