EXPLANATION OF PLATE III. 



CRISTEUvARIA CRETACEA Bagg, P. 239 



1-2. Lateral view and longitudinal section, (xs). (After Bagg.) 

 Vincentown limesand, Vincentown. 



CRISTELLARIA CULTRATA (Montfort), p. 239 



3. Lateral view, (xn). (After Bagg.) 



CRISTELLARIA GIBBA d'Orbigny, p. 240 



4-5. Lateral and front peripheral views of a recent individual, 

 (xi2H)- (After Challenger Report.) 



CRISTELLARIA ITALICA (Defrance), p. 241 



6-7. Lateral and peripheral views, (x22^). (After Bagg.) 

 Hornerstown marl. 



CRISTELEARIA MAMILUGERA Karrer, p. 242 



8. Lateral view of a recent individual, (xio). (After Chal- 

 lenger Report.) 



CRISTELLARIA MEGAPOLITANA (Reuss), p. 242 



9-10. Lateral and front peripheral views (x?). (After Reuss.) 



CRISTELLARIA ROTULATA (Lamark), p. 243 



11-12. Lateral and front peripheral views of a recent individual, 

 (x6). (After Challenger Report.) 



CRISTELLARIA WETHERELLI (Jones) , p. 245 



13. Lateral view of a recent individual, (xg). (After Challenger 

 Report.) 



CRISTELLARIA PROJECTA Bagg, p. 243 



14-15. Lateral view and longitudinal section, (xs). (After Bagg.) 

 Vincentown limesand, Vincentown. 



FLABELLINA SAGITTARIA (Lea), p. 247 



16-17. Lateral views of two individuals, (x2^). (After Bagg.) 

 Vincentown limesand, Vincentown. 



POLYMORPHINA COM MUNIS d'Orbigny, p. 248 



1 8. Lateral view, (xi8H). (After Bagg.) 



Vincentown limesand, Vincentown. 



POLYMORPHINA EMERSONI Bagg, p. 249 



19. Lateral view, (xi6^). (After Bagg.) 



Navesink marl, Freehold. 



POLYMORPHIA COMPRESSA d'Orbigny, p. 248 



20. Lateral view of an Eocene specimen from Maryland, (x2o). 



(After Maryland Geological Survey.) 



POLYMORPHINA GIBBA (d'Orbigny), p. 250 



21. Lateral view of an Eocene specimen from Maryland, (x25). 



(After Maryland Geological Survey.) 



