328 



Halysites compactus, Rominger. 



This species seems to be quite distinct from H. agglomeratus or H. 

 eatenularia. 



Heliolites interstinctus (L.). 



HYDROMEDUSiE. 

 Hydeoida. 

 Clathrooictyon ostiolatum, Nicholson. 

 Clathrodictyon fastigiatum, Nicholson. 

 Labechia. Species undeterminable. 

 Stromatopora Galtensis (Dawson). 

 Stromatopora antiqua, Nicholson and Murie. 

 Stromatoporella. Species undeterminable. 



BRACHIOPODA. 



Trimerella grandis, Billings. 

 Trimerella acuminata, Billings. 

 Trimerella Ohioensis, Meek. 

 Trimerella Billingsii, Dall. 

 Trimerella Dalli, Davidson and King. 

 Rhinobolus Galtensis (Billings). 

 Rhinobolus. Species uncertain. 

 Monomerella prisC;*, Billings. 

 Monomerella orbicularis, Billings. 

 Monomerella ovata, Whiteaves. 

 Monomerella ovata lata, Whiteaves. 

 Monomerella Durhamensis, Whiteaves. 

 Monomerella. Species uncertain. 

 Strophomena. Species undeterminable. 

 Orthis. Species undeterminable. 



Pentamerus oblongus, Sowerby. 



Schuchert (Synops. Amer. Foss. Brachiop., p. 305) regards P. hisinuatus, 

 McChesney, as a mere synonym of P. oblongus. 



CONCHIDIUM OCCIDENTALE, Hall. 



Pentamerus occidentalis, Hall 1852. Pal. N. York, vol. II, p. 341, pi. 



79, figs. 1 and 2 ; and of other U.S. and Cana- 

 dian palaeontologists, including the writer, 

 in this volume, pt. II, p. 65. 



