GO 



Annelida. 



Conchich elites flexuosus, Hall. 

 Serpulites dissolutus, Billings. 



Crustacea. 



Asaphuo megistos, Locke. 



" platycephalus, Stokes. 

 Bronteiis lunatns, Billings. 

 Calymene senaria, Conrad. 

 Cheirurus pleurexanthemus, Green. 

 Dalmanites Achates, Billings. 

 " Bebryx, Billings. 



" calliceplialus, Green. 



Encrinurus vigilans, Hall. 

 Harpes Dentoni, Billings. 



" Ottawaensis, Billings. 

 Illfemis Americanus, Billings. 



" Milleri, Billings. 



UTICA FORMATION. 

 Hydrozoa. 



Didymograptus annectans, Walcott sp. 



" flaccidns, Hall. 



Diplograptus mucronatus? Hall. 



" pristis? Hisinger. 



" quadrimucronatus, Hall. 



Sagenella ambigua, Walcott. 



POLYZOA, 



Stictopora acuta, Hall. 



Brachiopoda. 



Leptjena sericea, Sowerby. 

 Leptobolus insignis, Hall. 



" occidentalis?, HalL 



Lingula Daphne, Billings. 



" obtusa. Hall. 



" Progne, Billings. 



" quadrata, Eichwald. 

 Orthis testudinaria, Daluian. 

 Schizocrania filosa, Hall. 

 Siphonotreta Scotica, Davidsoii. 

 Strophomena alternata, Conrad. 

 Zygospira Headi, Billings. 



Lamellibranchiata. 



Lyrodesma pulchelluui, Hall. 

 Modiolopsis modiolaris, Halk 



