PIvATE XXXVIIa— Concluded. 



PAGE 



Fig. 17. Crania dubia, Fcerste 565 



17. a, Shell from Soldiers' Home, O ; b, shell from Hanover, Ind.; no details of struc- 



ture are visible in either case. 



Fig. 18. Cyci,osptra sparsi-pucata, Fcerste 59<* 



18. a, Pedicle valve ; b, lateral view 



Fig. 19. Orthis fausTa, var. squamosa, Fcerste. 574 



19. a, Brachial valve; b, lateral outlines. Carrollton pike quarry, about half a mile 



west of the Soldiers' Home, on the south side of the pike. 



Fig. 20. Orthis (Dinorthis) caixigramma, var. fissipucaTa, Fcerste 573 



20. a, Pedicle valve ; b, lateral outlines. Huffman's quarry, Ohio. 



