TEAVEs] FOSSILS OF HAMILTON FORMATION OF ONTARIO. 415 



Streblotrypa Haiiiiltonensis (Nicholson). 

 Fenestella Arkonensis, Whiteaves. 

 " Davidsoni, Nicholson. 



" filiforniis, Nicholson. 



" Nioholsoni, Wliiteaves. 



Retepora prisca, Nicholson. 

 Polypora Arkonensis, .S. A. Miller. 

 Ptilopora striata. Hall. 

 Trematfijiora carinata, Hall. 

 Leioclema inin\jtissinmin (Nicholson). 

 Aiiiplexopora Barrandi (Nicholson). 



" nioniliffn-niis (Nicholson). 



Leptotrypa quadrangvilaris (Nicholson). 

 Ceramopora Huronensis, Nicholson. 

 Fistnlipora Romingeri, Nicholson & Foord. 

 subtiliu, Hall. 

 " utriculus, Rominger. 



" variopora (Hall). 



Lichenalia ramosa, Hall. 

 " stellata, Hall. 



" subtrigona, Hall. 



Pinacotryj^a elegans (Rominger). 

 Botryllopora socialis, Nicholson. 

 Hederella Canadensis (Nicholson). 

 " cirrhosa, Hall. 



" hliformis (Nicholson). 



" nia'j;na. Hall. 



Ascodictyon fusifonne, Nicholson, 

 stellatnm, Nicholson. 



BRACHIOPODA. 



Lingula ligea, Hall. 



" Thedfordensis, Whiteaves. 

 Orbiculoidea Doria (Hall). 

 Crania crenistri.ata, Hall. 

 Craniella Hainiltonias (Hall). 

 Stropheodonta concava, Hall. 



" demissa (Conrad). 



" inicquistriata (Conrad). 



" jjlicata, Hall. 



Leijto.stiophia perplana (Conrad). 

 Pholidostrophia lowensis (Owen). 

 Leptaena rhotnboidalis (Wilckens). 

 Orthothetes anomalup (A. Wincholl). 



" Chemnngensis, var. arctostriatus, Hall. 



<i " var. perversus, Hall. 



Chonetes carinata (or coronata) Conrad. 

 " lepida, Hall. 



" lineata, Conrad, 



" scitula, Hall. 



" vicina (Castelneau). 



Strophalosia radicans (A. Winohell). 

 " truncata? (Hall). 



