385 

 Opis Vancouverensis, Whiteaves. 



Opis Vancouverensis, Whiteaves. 1879. This volume, pt. 2, p. 158, pi. 18, figs. 4 and 4 a. 



This species was based upon a slightly imperfect right valve, collected 

 on. the south-west side of Denman Island by Mr. Richardson in 1871. 

 The only other specimen of it that the winter has seen is a still more im- 

 perfect but characteristic right valve, collected at Brennan Creek, near 

 Wellington, Y.I., by the Rev. G. W. Taylor, in 1901. 



Unio Nanaimoensis, Whiteaves. 



Unio Nanaimoensis, Whiteaves. 1901. Ottawa Naturalist, vol. xiv, pp. 177-79, figs. 

 1 and 1«. 



"In the second volume of the Palfeontology of California, published in 

 1869, Mr. W. M. Gabb described and figured a Cretaceous species of 

 Unio, which he called U. Hubhardi. This species was based upon a 

 single specimen, which is said to be " from the NanaimoCoal Mine, Van- 

 couver Island," and to have been " kindly loaned " to Mr. Gabb by Mr. 

 Samuel Hubbard. It has long seemed to the writer that the evidence 

 for this locality is very unsatisfactory, and that there are two strong 

 reasons for supposing that some mistake has been made in regard to it. 

 The first of these reasons is that no similar specimens have since been 

 found in the Cretaceous rocks at Nanaimo, or any other locality in Van- 

 couver, or any of the immediately adjacent islands, by members of the 

 staff of the Geological Survey of Canada, or by local collectors. The 

 second is that numerous very typical specimens of U. Hubhardi were col- 

 lected at the Cowgitz coal mine, on Graham Island (one cf the Queen 

 Charlotte Islands) by Mr. James Richardson in 1872, and by Dr. G. M. 

 Dawson in 1878. 



" No other land or fresh water shells have yet been recorded as occur- 

 ring in the Cretaceous rocks of the Nanaimo, Comox, or Cowitchan coal 

 fields. But in March, 1894, a nearly perfect but somewhat crushed and 

 slightly distorted bivalve shell was found by Mr. W. Haggart, in shale 

 at the top of No. 6 Pit, Wellington Colliery, Nanaimo. This specimen 

 is now the property of the Provincial Museum, Victoria, B.C., and has 

 been forwarded to the writer by Dr. C. F. Newcombe, of that city, for 

 examination and comparison. 



"Judging by its external form and surface markings, this fossil seems 

 to be a specimen of a previously undescribed species of Unio, that is 

 quite distinct from U. Hubhardi and from any of the Unionidje of the 

 Cretaceous or Laramie rocks of North America. 



