Report of U. S. National Museum 1897. Flint. 



PLATE 18. 



FIG. 1. REOPHAX PILULIFERA BRADY. SEE PAGE 273. 



FIG. 2. REOPHAX DENTALINIFORMIS BRADY. SEE PAGE 274. 



FIG. 3. REOPHAX BACILLARIS BRADY. SEE PAGE 274. 



FIG. 4. REOPHAX NODULOSA BRADY. SEE PAGE 274. 



