PoLYMORPHiNA LACTitA (Walker and Jacob) p. 250 



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



(After Maryland Geological Survey.) 



23. Lateral view of a recent specimen, (x2S). (After Challenger 



Report.) 



PoLYMORPHiNA LACTKA (Elongate variety) Brady, p. 251 



24-25. Oral and lateral vie\v.s of a recent nidi\'idnal, (x375S). 

 (After Challenger Report.) 



PoLY.MOEPHiNA OKBiGNii ( Zhorzewski ), p. 252 



26. Lateral \'iew of a recent nidividual, (x?). (After Parker, 

 Jones and ]-Jrad>'. ) 



PotYJIOEPHIXA PKOiiLE.MA ( d'Orbigny) p. 253 



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

 Parker, Jones and Brady.) 



Poi.viioRPHiNA i-tEGULARis Vim Minister, p. 253 



29-31. Lateral views of two recent individuals, with an oral \ie\v 

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

 Brady.) 



GlodicERIXa el'LUiides d'Orbigny, p. 254 



32-34. L'pper, peripheral and lower \'iews of a typical recent shell, 

 (x25). (After Challenger Report.) 



Gl^OEIGEKIKA BULI.I-IIDES var. TEILOEA RcuSS, p. 255 



35. L'pper view of a recent indi\idual, (X50). (After Challenger 

 Report.) 



