312 



1900. 



Further notes on Podophthalmatoiis Crustaceans from the Upper Cretaceous 

 Formation of British Columbia, etc. 



By Henkt Woodward, LL.D., F.R.S., F.G.S. 



Two papers, published in the Geological Magazine for September and October, 

 1900, Decade iv, vol. vii, pp. 392-401, and 433-43.5, pis. xv, xvi and xvii. 



1901. 



Description of a new species of Unio from the Cretaceous Rocks of the Nanaimo. 



Coal-Field, V.I. 



By J. F. Whiteaves. 

 Ottawa Naturalist, January, 1901, vol. xiv, No. 10, pp. 177-179, figs, land 1«. 



The Unio is U. Nanainioensis. 



ft was in 18G9, in the second volume of the Palaeontology of Cali- 

 fornia, that Professor J, D. Whitney and Mr. W. Gabb first correlated 

 the coal-bearing formation of Vancou\er, which Dr. Dawson has called 

 the Nanaimo group, with the Chico group of California, All the fossils 

 enumerated or described in Part II., and in the present part of this volume, 

 are from the Nanaimo group, which, as now understood, would appear to 

 be not only the equivalent of the Chico group, but also of the Pierre-Fox 

 Hills or Montana formation of Manitoba, the North-west Territories and 

 the Upper Missouri County ; also, in a general way, of the Upper Chalk 

 of England and the-Senonian of France. Dr. Kossmat correlates it with 

 the Upper Senonian. 



The fossil fauna of of the Nanaimo group, also, is strikingly similar to 

 that of the higher beds of the Upper Cretaceous in the Island of Saghalien 

 (Sachalin) in the Sea of Okhotsk, of Japan and Southern India, As a 

 whole, its fauna is quite different to that of the somewhat older Cretaceous 

 I'ocks of the Queen Charlotte Islands, though a few species appear to be 

 common to both. These latter are, — an Ammonite that can scarcely be 

 distinguished from Tetragonites Timotheanus ; Vanikoro pulchella ; 

 Nucula (Acila) truncata ; and perhaps Trigonia Tryoniana. Phylloceras 

 rarnostim and CucuUcea truncata of the Nanaimo group, also, are very 

 nearly allied to P. Knoxvillense and C. ponderosa of the Queen Charlotte 

 Island Cretaceous, 



Some thin shaly beds of the Vancouver Cretaceous contain the remains 

 of land plants, which have been described elsewhere by the late Sir J. W. 

 Dawson and others, but the fauna of the Nanaimo group would seem to 

 be almost exclusively marine. The only indications of land or fresh- 

 water shells in these rocks that the writer has seen, are the type of Unio 

 Nanaimoensis, from the Wellington mine, near Nanaimo, and six very 

 imperfect specimens of a gasteropod, that is possibly not marin*^, from 

 the roof of the coal at the Nanaimo mines. The following are some of 



