PLATE LXIII. 



PAGE 



Fig. 1. Vaginulixa legumen (Linne) 240 



Brooks Estate near Seat Pleasant. X 50 



Figs. 2, 3. Maeginulina costata (Batscli) 240 



2. Large individual from LTpper Marlboro. X 24 

 ?j. Smaller individiial from same localitj'. X 50 



Fig. 4. Cp.istellaria gibba d'Orbignj- 241 



1 mile northeast of Piscatawaj^ X 24 



Fig. 5. Cristellaria rotatula (Lamarck) 242 



1 mile southeast of Mason Springs. X 7 



Fig. 6. Crtstellaria eadiata (Bornemann) 24.1 



Woodstock. X 24 



Fig. 7. PoLYMORPHiNA AUSTRIACA (d'Orbigny) 244 



Woodstock. X 50 



Figs. 8, 9. PoLYMORPHiNA COMMUNIS (d'Orbignj^) 244 



8. Woodstock. X 50 



9. Upper Marlboro. X 50 



Fig. 10. POLYMORPHINA COMPRESSA d" Orbigny 24G 



Woodstock. X 40 



Fig. 11. POLYMORPHINA ELEGANTissiMA Parker and Jones 247 



Woodstock. X 50 



Fig. 12. POLYMORPHINA GIBBA (d'Orbigny) 248 



Brooks Estate near Seat Pleasant. X 50 



Fig. 1.3. POLYMORPHINA LACTEA (Walker and Jacob) 248 



Upper Marlboro. X 50 



Fig. 14. POLYMORPHINA PRAELONGA Terquem 240 



Woodstock. X 32 



Figs. 15, If), Ida. Globigerina biilloides d'Orbigny 250 



Well at Chesapeake Beach at 90-92 feet. X 50 



315 



