336 THE CANADIAN NATURALIST. [Vol. ix. J 



* Spirifer siihsulcatus, Hall. 



* Sp. rugae-costa, Hall. 



Sp. (large species similar to that in last list.) 

 ^ Chonetes Nova Scotica, Hall. 



* Strophomena rhomboidalis, Wilck. 

 ^ S. Gilpini, n. s. (see infra). 



* Orthis testudinaria, Dalman. 



0. "perelegans. Hall (or allied). \ 



0. discus, Hall (or allied). 



Strophodonta varistriata. Hall (or allied). 



* Rhynchonella Sciffordi, Hall. 

 R. vellicata, Hall (or allied). 



R. pyramidata. Hall (or allied). 



* Atrypa reticularis^ Linn, (coarsely ribbed variety). 

 Stricklandinia BiUingsiana, n. s. (see infra). 

 Pentamerus sp. 



Discina (smooth conical species like D. oblong ita, Portlock 

 (see infra). 

 ^^ Cytherodon sulcatus, Billings. 



* Megaynhonia cancellafa, Hall (see infra). 

 ^ M. striata, Hall. 



^ Fteronifella curta, Billings. 



* P. oblonga, Billings. 



* P. venusfa, Billings (or allied). 

 Avicula textilis, Hall (or allied). 

 A., new species ? (see infra). 



* CUdophorus concentricus, Hall. 



* 6\ elongatus ^ Hall. 



* Grammysia remota, Billings. 



* Murchisonia Arisaigensis, Hall. 

 ^ i/. acicula, Hall. 



Platyostoma depressa, Hall (or allied). 



Cyrtoceras suhrectum, Hall. 



Cyrtoceras, n. s. (see infra). 

 ^ Orthocei'as pinictostriatum, Dawson. 

 ^ Cornidites Jlexuosus, Hall. 



C. n. s. (see infra). 

 ^ Homalonotus Dawsoni. 



H. (smooth pygidium, allied to H. delphinocephalus') . 



* Calymene Blumenhachii (large and small varieties or sub- 



species). 



