Report of U. S. National Museum, 1897. Flii 



PLATE 77. 



FIG. 1. TRUNCATULINA WUELLERSTORFI SCHWAGER. SEE PAGE 333. 

 FIG. 2. TRUNCATULINA UNGERIANA D>ORBIGNY. SEE PAGE 333. 

 FIG. 3. TRUNCATULINA ROBERTSONIANA BRADY. SEE PAGE 333. 

 FIG. 4. TRUNCATULINA TENERA BRADY. SEE PAGE 334. 

 FIG. 5. TRUNCATULINA AKNERIANA D'ORBIGNY. SEE PAGE 333. 



a. Horizontal Section. 



FIG. 6. TRUNCATULINA PYGMxEA HANTKEN. SEE PAGE 334. 



