Report ofU. S. National Museum, 1897. — Flint. 



Plate 8. 



Fig. 1. PSAMMOSPHAERA FUSCA Brady. See Page 268. 



((, I'. Sections. 



Fig. 2. PSAMMOSPHAERA FUSCA Brady, var. TESTACEA, new. See Page 268. 



a. Artificial Section. b. Accidental Section. 



