﻿130 Canadian Record of Science. 



from the (Galena) Trenton of Lake Winnipeg and its 

 vicinity, which has yet to be examined. The determina- 

 tions and descriptions of Canadian Stromatoporoids are 

 scattered through many publications that are not always 

 easily accessible, and the present paper, therefore, will 

 •consist of a stratigraphical and systematic list, with 

 references, etc., of all the species that have either been 

 recognized or even supposed to have been recognized 

 in Canada, or described from Canadian localities, 

 commencing with those that have been examined micro- 

 scopically. 



A. Species that have beej^ examined with the 



MICROSCOPE. 



[Canibro-Silitrian species.) 



Clathrodictyon variolare, Eosen. (Sp.) 



Stromatopora variolaris, Von Eosen. 1867. Ueber die 

 Natur der Stromatop., p. 61, 

 pi. 2, figs. 2-5. 

 Clathrodictyon variolare, Nicholson. 1887. Ann. and Mag. 

 Nat. Hist., ser. 5, vol. XIX., p. 4, 

 pi. 1, figs. 4-6. 



Nicholson. 1889. Mon. Brit. Stro- 

 matop., pt. 2, p. 150, pi. 18, figs. 

 1-5, and pi. 17, fig. 14. 

 Specimens which appear to be referable to this species 

 were collected from the Hudson Eiver formation at the 

 Jumpers, An ticosti, by J. Eichardson in 1856, and at Cape 

 Smyth, Lake Huron, by Dr. E. Bell in 1859. It is the 

 species referred to on page 304 of the Geology of Canada 

 as Stromatopora concentrica, which, according to Professor 

 Nicholson, "so far as at present known" (in 1891), "is a 

 purely European species and entirely confined to the 

 Devonian rocks." 



