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TWENHOFEL: EXPEDITION TO THE BALTIC PROVINCES. 313 
each region make their first appearance in significant numbers in the 
underlying formation. Considering that the Borkholm fauna has 
not been carefully studied for correlation with North America, the 
common occurrence of such a great number of species is rather remark- 
able. If only the Bryozoa be considered it is found that eight of the 
fourteen Borkholm species are also found in the Anticosti section, six 
in the Ellis Bay and two in the Charleton. It is therefore probable 
that when other phyla have been subjected to as careful comparative 
study as have the Bryozoa, that a greater number of species will be 
found common to the two regions. Since not so close faunal contact 
or general expression is shown with any other Anticosti formation, it is 
held as extremely probable that the Borkholm represents the whole or 
a part of the Ellis Bay formation. The Lyckholm, hence, represents 
some part of the Charleton formation. Large Subulites and Hormo- 
tomas are found in the upper part of this formation in association with 
Halysites and members of the Heliolitidae. There are, however, no 
Maclureas. Common or similar species are as follows:— 
1. Calapoecia canadensis. 
2. Halysites catenularia. 
3. Paleofavosites asper. 
4. Streptelasma rusticum Billings (S. corniculum is said to occur in 
Esthonia). 
5. Zaphrentis affinis. 
6. Corynotrypa dissimilis. 
7. Nematopora lineata. 
8. Protocrisina exigua. 
9. Sceptropora facula (Borkholm). 
10. Clitambonites verneuili diversus. 
11. Plectambonites sericeus. 
12. Pseudolingula elegantula. 
13. Byssonychia sp. nov. 
14. Sinuites cf. bilobatus. 
15. Calymene meeki. 
16. Proetus alaricus Billings. 
Formerly I was inclined to believe that the Lyckholm and Borkholm 
found their equivalents in the lower parts of the Ellis Bay and the 
English Head and Charleton formations.!. This view is now modified 
as stated above and it is believed that the English Head and perhaps 
1Twenhofel. Bull. 3, Victoria memorial museum, 1914, p. 19. 
