596 



GEOLOGY OF OHIO. 



Orthoceras (Cycloceras) amycus, Hall. 

 Orthoceras (Kionoceras) Crawfordi, Foerste. 

 Orthoceras {Discosorus) conoideum, Hall. 



PTEROPODA. 



Coleolus Clintonensis, sp. nov. 

 Conularia Niagarensis, Hall. 

 Conularia bilineata, sp. nov. 



GASTEROPODA. 



Belier'ophon fiscello-striatus, Foerste. s 



Beder -option (Bucania) exiguiis, Foerste. 



Bellerophon (Bucania) operlus, sp. nov. 



Bellerophon (Bucania) trilobatus, Sowerby. 



'Cyrtolites Youngi t Foerste. 



Pleurotomaria inexpectans, Hall and Whitfield. 



Pleurotomaria filitexta, sp. nov. 



Raphistoma affine, Foerste. 



Cyclonema bilix, Conrad, (var. varicosum, Hall.) 



Cycloraalia, Foerste. . 



Straparollus (cf. Oriostoma) iticarinahim, sp. nov. 



Platyceras (Platystoma) Niagarense, Hall. ( Var. plebium; var. Clin 



tonense) 

 Subulites direcius, sp. nov. 



Subulites (Polyphemopsis) plani-laleralis, sp. nov. 

 Loxonemaf (cf. Holopella) subulatum? , Conrad. 

 Paleopupa (Gen. nov.) abrupta, sp. nov. 



, LAMELLIBRANCHIATA. 



Pteyinea brisa. Hall. 



Avicula Whitfieldi, Foerste (equivalent to Cypricardites ferrug metis, Hall 



and Whitfield. 

 Mytilarca myticiformis, sp. nov. 

 Modiolopsis rhomboidea, Hall. 

 Modiolopsis subrhomboidea, Simpson. 

 Cypricardites Caswedi, Foerste. 

 Cypricardinia undulostriata, Hall. 

 Tellinomya ellipiica, Hall. 

 Tellinomya (Nucula?) minima, Foerste. 

 Tellinomya (Nucula?) socialis, sp. nov. 

 Tellinomya (Nucula?) Clinionensis, sp. nov. 

 Nuculites (Cleidophorus) ferrugineus, sp. nov. 



