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



Plate 71. 



Fig. 1. SPH/tROIDINA BULLOIDES D'Orbigny. See page 325. 



Fig. 2. SPH/EROIDINA DEHISCENS Parker & Jones. See Page 325. 



Fig. 3. CANDEINA NITIDA D'ORBIGNY. See Page 325. 



Fig. 4. SPIRILLINA VIVIPARA EhRENBERG. See Page 326. 



Fig. 5. SPIRILLINA LIMBATA Brady. See Page 326. 



Fig. 6. SPIRILLINA OBCONICA Brady, see page 326. 



