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



PLATE 48. 



FIG. 1. CORNUSPIRA FOLIACEA PHILIPPI. SEE PAGE 303. 



FIG. 2. CORNUSPIRA CARINATA COSTA. SEE PAGE 303. 



FIG. 3. CORNUSPIRA INVOLVENS REUSS. SEE PAGE 303. 



FIG. 4. PENEROPLIS PERTUSUS FORSKAL. SEE PAGE 304. 



a. Horizontal Section. 



