124 



Lower beds, Dr. R. W. Ells, 1875 (one specimen), and T. C. Weston, 

 1884 (six specimens). 



Belleeophon bilobatus, Sowerby. 



Bellerophon hilobatxis, Sowerby. .1839. In Murchison's Silur. Syst., p. 643, pi. 19, 



fig. 13. 



Emmons.. 1842. Geol. N. York, pt. 2, p. 393, and p. 392, fig. 6. 



" " Hall 1847. Pal. N. York, vol. I. ,p. 184, pi. 40, figs. 3,ad. 



" " Billings... 1863. Geol. Canada, p. 184, figs. 180, a-6. 



Lower beds, T. 0. Weston, 1884 : four small specimens, two of which 

 are much distorted. 



Cyetolites compeessus, Conead. 



Phragmolites compressiis, Conrad. .1838. Ann. Rep. N. York St., p. 119. 



CyrtoHtes compressus, Hall 1847. Pal. N. York, vol. I., p. 188, pi. 40, figs. 



2, a-f. 

 Whiteaves ..1893. Can. Reo. Sc, vol. V., p. 323. 



Lower beds, T. C. Weston, 1884 : five specimens. This species has been 

 collected also from the (Galena) Trenton limestone at Lower Fort Garry 

 by Dr. R. Bell in 1880, and at East Selkirk b'y A. MacCharles in 1884. 



Cyclora minuta, Hall. 



Cydora minuta, Hall, .1845. Am. Journ. Sc. and Arts, vol. XLVIII., p. 294. 



Lower beds, T. C. Weston, 1884 ; one specimen, which has been 

 identified with this species by Mr. E. O. Ulrich. 



Teochonema umbilicatum. Hall. (Sp.) 



Pkurotomaria umiilicata, Hall 1847. Pal. N. York, vol. I., pp. 43 and 



175, pis. 10, figs. 9, a-b, and 38, figs. 

 1, a-g. 



Trochonema umbilicata, Salter 1859. Geol. Surv. Can., Can. Org. Rem., 



Dec. 1, p. 27, pi. 6, fig. 3. 

 Billings 1863. Geol. Canada, p. 145, fig. 92. 



Trochonema nmbilicatum, Whiteaves 1893. Can. Rec. So., vol. V., p. 323. 



Lower beds, T. C. Weston, 1884 : several specimens. In Manitoba, 

 T. umhilicatum has also been collected from the ((xalenaj Trenton at the 

 Dog's Head, Lake Winnipeg, by T. C. Weston in 1884, and at Snake, 

 Berens and Commissioner's Islands, in that lake, by D. B. Dowling and 

 L. M. Lambe in 1890. 



