156 



them transverse diaphragms or tabulse can be detected with the aid of a 

 lens. 



Lower Fort Garry, Dr. R. Bell, 1880, one specimen completely sur- 

 rounding the body chamber of a large Orthoceratite, which measures two 

 inches and three-quarters in diameter at the larger end and upwards 

 of four inches in length, — and T. C. Weston, 1884, four specimens, one 

 partly encrusting a colony of the Chcetetes perantiquus of this Report, 

 and the others detached from the organisms to which they were origin- 

 ally adherent. 



These specimens would seem to indicate a well marked local variety of 

 P. vetusta, or perhaps a distinct species, which differs from the ordinary 

 form of P. vetusta chiefly in its much greater size and thickness. They 

 very closely resemble the Coocoseris TIngerni of Eichwald, as described 

 and figured in the "Lethsea Rossica,"* but the calyces of C. Ungerni are 

 represented as a line and a half, or three mm. in diameter. Lindstrom, 

 however, in his " Index to the Genera of Palseozoic Oorals,"t regards 

 Protarcea and Goccoseris as distinct and " well-established " genera. In 

 this "Index,'' Stylaraa of Von Seebach is stated to be synonymous with 

 Goccoseris. Protarcea Verneuili of Ed-wards and HaimeJ is said to have 

 calyces three millimetres in diameter, with twenty septa in each. 



Favosites peolificus, Billings. 



Favorites prolifious, Billings 1865. Canad. Nat. and Geol. , Second Series, 



vol. II., p. 429. 



1866. Geol. Surv. Canada, Cat. Silur. Foss. 



Isl. Anticosti, p. 6. 



Whiteaves 1895. This vol., pt. 2, p. 113. 



Cfr. Favosites aspera (d'Orbigny) Edwards & 



Haime 1854. Brit. Foss. Corals, p. 257, pi. 60, figs. 



3 and 3o, and of other European authors. 



Several specimens of a large coral, which appear to be referable to 

 this species, were collected at East Selkirk by Dr. R. Bell in 1880, and 

 by T. C. Weston and A. K. McCharles in 1884; also at Lower Fort 

 Garry, by T. C. Weston and A. McCharles in 1884. In the writer's 

 judgment they are essentially similar, in every respect, to the specimen 

 from Stony Mountain referred to on page 113 of the second part of this 

 volume, as being " labelled Favosites prolifious in Mr. Billings's own hand- 

 writing." They are either subhemispherical colonies, or large portions of 

 such colonies, the largest of which is a little more than six inches in 

 diameter, by about two inches and a-half in height, and sometimes 



* Volume I., ])art 1, p. 442, Atlas, pi. 25, figs. 4, a-c. 



+ Bihang Till K. Svenska Vet.-Akad. Handlingar (Stockholm, 1883), Band 8, No. 9, 

 pp. 12 and 8. 

 % Monographie des Polypiers Fossiles des Terrains Paleozoiques (Paris, 1851), p. 209 



