POI.YMORPHINA LACTEA (Walker and Jacob), p. 250 



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



(After Maryland Geqlogical Survey.) 



23. Lateral view of a recent specimen, (x25). (After Challenger 



Report) 



POLYMORPHINA LACTEA (Elongate variety) Brady, p. 251 



24-25. Oral and lateral views of a recent individual, (x37^). 

 (After Challenger Report.) 



POLYMORPHINA ORBiGNii (Zborzewski), p. 252 



26. Lateral view of a recent individual, (x?). (After Parker, 

 Jones and Brady.) 



POLYMORPHINA PROBLEMA (d'Orbigny), . p. 253 



27-28. Lateral views of two recent individuals, (x2 and X3). (After 

 Parker, Jones and Brady.) 



POLYMORPHINA REGULARS von Miinster, p. 253 



29-31. Lateral views of two recent individuals, with an oral view 

 of the smaller one, (x4). (After Parker, Jones and 

 Brady.) 



GLOBIGERINA BULLOIDES d'Orbigny, p. 254 



32-34. Upper, peripheral and lower views of a typical recent shell, 

 (x2S). (After Challenger Report.) 



GLOBIGERINA BULLOIDES var. TRILOBA Reuss, p. 255 



35. Upper view of a recent individual, (xso). (After Challenger 

 Report.) 



