FOSSILS OF THE CLINTON GROUP. 595 



Trilobites, Mollusks and Brachiopods of the Clinton Group 



in Ohio and Indiana. 



trilobita. 



Acidaspis Orto?ii, Foerste. 



Acidaspis brevispinosa, sp. nov. 



Proetus determinatus , Foerste. 



Cyphaspis Clintonensis, Foerste. 



Iilcenus Daytonensis, Hall and Whitfield. 



Llcenus ambiguus, Foerste. 



Iilcenus insignis, Hall. 



Iilcenus Madisonianus, Whitfield, (var. elongatus, var. depressus.) 



Calymene Vogdesi, Foerste. 



Calymene Niagarensis, Hall. < 



Ceraurus (Pseudosphcerexochus) Clintonensis, sp. nov. 



Spluzrexochus pisum, sp. nov. 



Lie has breviceps, Hall. (var. Clintonensis) 



( Lichas phlyctainoides ? Green.) 



Phacops trisulcatus, Hall. 



Dalmanites Wert liner i, Foerste. 



Encrinurus puncta us, Wahlenberg. 



OSTRACODA. 



Elpe Ulrichi, sp. nov. 



ANNELIDA. 



Cornulites distans, Hall. 



CEPHALOPODA. 



Gomplioceras Ortoni sp. nov. 



Cyrtoceras Clintonense, sp. nov. 



Gyroceras (Glyptoceras) subcompressum, Beecher. 



Gyroceras ( Glyptoceras) Eaionnise, Claypole. 



Orthoceras (Acti?wceras) Youngi, Foerste. 



Orthoceras (Actinoceras) clavatum, Hall. 



Orthoceras (Actinoceras) lati-?iummulatum, Foerste. 



Orthoceras ( Actinoceras) turgido-nummulatum, Foerste. 



Orthoceras (Actinoceras) Daytonense, Foerste. 



Orthoceras (Eu- Orthoceras) rectum, Worthen, var. Junius, Foerste. 



Orthoceras (Eu-Orthoceras) ignotum, Foerste, variety erraticum var. nov. 



Orthoceras (Eu-Orthoceras) Hanoverense, Foerste. 



Orthoceras (Eu-Orthoceras) virgulatum, Hall ? 



Orthoceras (Cycloceras) inceptum, Foerste, var acceleratum. 



Orthoceras (Cycloceras) Nova- Car lis lens e, Foerste. 



Orthoceras (Spyrocerasf), spyroceroides sp. nov. 



Orthoceras (Sbyrocerasf) Jamesi, Hall and Whitfield. 



