269 
Monticulipora discula, new species. 
Monticulipora intersita, new species. 
Nicholsonella frondifera, new species. 
Nicholsonella pulchra Ulrich. 
Orbignyella multitabulata, new species. 
Orbignyella sublamellosa Ulrich and Bassler. 
Orthis tricenaria Conrad. 
Pachydictya cf. fimbriata. 
Pachydictya ef. foliata. 
Pachydictya senilis, néw species. 
Paleocrinus culcatus Safford. 
Pianodema stonensis (Safford). 
Pianodema subaequata (Conrad). 
Protorhynecha ridleyana (Safford). 
Pterygometopus troosti (Safford). 
Rafinesquina incrassata (Hall). 
Rhinidictya nashvillensis (Miller). 
Rhinidictya tabulata, new species. 
Stictoporella cribrilina, new species. 
Stromatotrypa incrustans, new species. 
Stromatotrypa lamellata, new species. 
Stromatotrypa regularis, new species. 
Strophomena incuryata (Shepard). 
Tetradium syringoporoides Ulrich. 
Zygospira saffordi Winchell and Schuchert. 
Ridley Limestone. 
Anolotichia explanata, new species. 
Camarella varians, Billings. 
Chasmatorpora sublaxa (Ulrich). 
Constellaria lamellosa, new species. 
Ctenobolibina suberassa, Ulrich. 
Dekayella ridleyana, new species. 
Dianulites ef, petropolitanus. 
Dinorthis deflecta (Conrad). 
Drepanella ampla, Ulrich. 
Hecyliomphalus contiguus Ulrich. 
Escharopora suberecta (Ulrich). 
Gonioceras anceps Hall. 
Hallopora spissata, new species. 
Hebertella bellarugosa (Conrad). 
Helopora spiniformis (Ulrich). 
Hemiphragma irrasum (Ulrich). 
Leperditia fabulites (Conrad). 
Liospira americana (Billings). 
