188' 



(B. In Mr. Etheridge's lists of Nanaimo, Comox, and Yaldez Inlet 

 fossils, omitting Trigonia crenulata, which Mi-. Meek says is his 

 T. Evansana.) 



Ammonites Texanus. i Inoceramus Texanus. 



Cytherea Leonensis. | Inoceramus confertim-annulatus. 



2. Possils found in the Upper Cretaceous of Vancouver, Mississippi, 

 and Alabama. 



Gyrodes excavata. (=Gr. Spillmanii.) i Inoceramus Crippsii, var. proximns 



Caryatis plana. (=Aphrodina Tippana. | « « rar. Barabini. 



3. Species which occur in the Upper Cretaceous of Vancouver and 

 New Jersey. 



Heteroceras Conradi. i Inoceramus Crippsii, var. Barabini 



Gyrodes excavata. ( =Natica infracarinata.) | 



4- Fossils believed to be common to the Upper Cretaceous of Vancouver 

 and to the Fort Pierre and Fox Hills Groups of Dakota, Nebraska 

 and Montana. 



Serrifusus Dakotensis. 

 Mactra Warrenana. 

 Thetiopsis circularis. 

 Clisocolus cordatus. 



Inoceramus Sagensis, var Nebrascensis. 

 " Crippsii, var. proximus. 



" " var. Barabini. 



5. Species from the Upper Cretaceous of Vancouver and the Upper 

 Missouri Country which have been separated on very slight differ- 

 ences, and, in some cases, perhaps, on insufficient grounds. 



Vancouver Cretaceous, Cretaceous of the U. Missouri Country. 



Ammonites complexus, var. Suciensis, Ammonites complexus, Hall & Meek. 



Mee'i. 



Dentalium Nanaimoense, Meek. Dentalium gracile, Hall & Meek. 



Tellina occidentalis, Meek (Sp.) Not Mor- Tellina equilateralis. Meek & Hayden. 



ton. 



Proiocardium scitulum, Meek. Piotocardium subquadratum and rarum 



of Evans and Shumard. 



Cucullasa truncata, Gabb. Cucullsea Nebrascensis, Owen. 



Mytilus pauperculus, Gabb. Mytilus subarcuatus, Meek & Hayden. 



Inoceramus 7ancouverensis, Shumard. Inoceramus altus. Meek. 



The theory that the two oceans of the Cretaceous period in North 

 America were isolated by a continuou!^ land barrier is open also to objec- 

 tions of a pui-ely physical character. Dr. F. V. Hayden and other 

 geologists whose opportunities for a practical study of the question have 



