OF coNctioi.oav. 



93 



i&MU, 



REVIEWS 



L— AMERICAN, 



Proceedings of the Academy of Natural Sciences of Philadel- 

 phia. July— August, 1865. 



Descriptions of New Sj^ecies of Fossils, from the Marshall 

 Group of Blichigan, and its supposed equivalent in other 

 States ; with Notes on some Fossils of the same ac/e pre- 

 viously described, by prof. Alexander wincuell. 



The following are the new 



Discina Gallaheri. 

 Froducta gracilis. 



" duplicostata. 

 " 3Iorbiliana. 

 curtiroslra. 

 " dolorosa. 

 Oi til is Jiava. 

 Spirigera Misso urie n sis. 

 hiloba. 

 '' Ohiensis. 



Spirifera centronala. 



Sillana. 

 Spiriferina Clarksvillensls. 



bina,cuta, 

 Ith ynchonella let rap. It/.r. 

 lieleropsis. 

 " persinucta. 



species described: — 



Rhynchonella unica. 



" ( Retzia?) micropleura. 

 Centronella Alfei. 

 Ostrea patercula. 

 Pterinea spinalata. 

 Fernopecten, iiov. gen. 



limatus. 

 Finna ? Marshallensis. 

 Myalina Lowensis. 

 Sangainolites strigatus. 

 Sanyuinolaria rostrata. 

 Conularia Newberryi. 

 Bellerophon Whittleseyi. 

 Met Optoma undata 

 Pleurotomaria quinque sulcata. 

 ( '// r'orrras Rockforde n se. 



