239 



transverse sections made lower down (fig. 18) shew that the walls of 

 adjoining corallites are completely amalgamated and solid below the 

 calyces. Longitudinal sections (fig. 19) shew that the corallites are 

 pro^■ided with complete and rather distant traverse diaphragms or 

 tabulse. 



Lower Fort Garry, T. C. Weston, 1884 : one imperfect specimen about 

 two inches and a half by two inches in diameter, with part of its upper 

 surface covered with a colony of Protarti'ci {vetusta? var.) magna. 



This species is referred to the genus Chwtetes on the authority of 

 Mr. Ulrich, who has carefully examined the specimen upon which it is 

 based, and who was the first to recognize its structural characters and 

 generic position. It is of special interest as occurring at such a low 

 geological horizon. Its more minute surface characters are somewhat 

 similar to those of Cluttetes tumidus, as represented by Milne Edwards 

 and Haime, on Plate 45, fig. 36, of their Monograph of the British Fossil 

 Corals, published by the Palieontographioal Society. The exact sys- 

 tematic position of Chcftetes has yet to be ascertained. In a letter 

 recently received, Mr. Ulrich expresses the opinion that it is not a 

 polyzoon or bryozoon, but a coral, and it is in accordance with this 

 view that the preceding description was written, and the terms "coral- 

 lum'' and "corallites" used rather than zoarium and zocecia. He is 

 inclined to think that Chrntetes is most nearly related to Labeclda. 



B. — From the passage beds at the top of the Loioer 

 Sandstones. 



ALG^. 

 LiCROPHYCus Ottawaknsis, Billings. 



Licrophycus Ottaioaensis, Billings 1862. Geol. Surv. Canada, Pal. Foss. , vol. 



I., p. 99, fig. 87. 



Punk Island, Lake Winnipeg, Professor H. Y. Hind, 1858, one 

 specimen, and D. B. Dowling, 1890, two specimens. Grindstone Point 

 (two specimens) and Deer Island (two specimens). Lake Winnipeg, T. C, 

 Weston, 1884. 



