154 



NEW YORK STATE MUSEUM 

 PLATE 7 



Eotomaria kayseri sp. nov. 



(See plate 8, fig. i) 

 Page 70 



1 Lateral view of the internal cast 



Coelidium macrospira Hall (sp.) 



(See plate 10, fig. 13) 

 Page 65 



2 Lateral view of a specimen with angular volutions, showing 



distinctly the surface characters 



3 Young, somewhat rapidly widening specimen with rounded 



volutions (M. logani) 



4 A still younger specimen, showing the same characters 



5 A section of the specimen figure 2, showing the perforate axis 



of the shell 



6 A nearly complete example, showing a gradual change from 



the round to more angulated volutions. From a gutta- 

 percha squeeze of a natural impression 



