WHITEAVES.] DEVONIAN FOSSILS OF MANITOBA, ETC. 279 



(S.) Cystodictya Hamiltonensis, Ulrioh. 



Plate 36, figs 2, 2a and 2b. 



Cystodictya Hamiltoncnxin, Ulrich. 1890. Geol. Surv. Illinois, vol. VIII, p. 493, 



pi. xlii, fig. 4, and pi. xliii, fig. ] . 



Monroe Point, Lake Manitoba, J. B. Tyrrell and J. F. Whiteaves, 

 1888 : seven specimens. Lake Winnipegosis, at a small island on the east 

 side of Dawson Bay, D. B. Dowling, 1888 : three specimens. The spe- 

 cies has since been collected by Messrs. Tyrrell and Dowling in 1889, on 

 the east side of Dawson Bay, at Whiteaves Point, and on three small 

 islands adjacent thereto, on the west side, at Rowan Island, also {loose) 

 on the east side of Lake Winnipegosis at a small island east of the south 

 end of Birch Island. 



The specimens from these localities were first identified with this spe- 

 cies by Mr. L. M. Lambe. 



(S.) Fenestella vera, Ulrich. 



Plate 36, figs. 3 and 3a. 



Fenestella vera, Ulrioh. 1890. Geol. Surv. Illinois, vol. VIII, p. 535, pi. xliv, figs. 1 

 and la, and pi. liv, fig. 3. 



Dawson Bay, on two small islands near Whiteaves Point, three speci- 

 mens on one of these islands, and one specimen on the other ; also on the 

 east side of Lake Winnipegosis, at a small island east of the southern 

 extremity of Birch Island (a small fragment) ; J. B. Tyrrell, 1889. 



These specimens agree very well with Mr. Ulrioh's description and 

 figures of /'"'. vera, but they are not sufiiciently well preserved to show the 

 "very minutely granulose " surface of "both branches and dissepiments,'' 

 said to be characteristic of that species. Only the outer or non-ceUuli- 

 ferous side is exposed in any of these specimens, but the shape, number 

 and disposition of the zooecia has been clearly ascertained by scraping 

 away small portions of the exterior. The identifications of the specimens 

 here referred to this and to the preceding species have been verified by 

 Mr. Ulrich. 



(S.) Fenestella, 8p. 



(Cfr. Fenestella dis^Kinda, Hall.) 



Plate 36, fig. 4. 



Fenestella dispandus, Hall. 1886. Rep. St. Geol. for 1885, adv. sheets, Expl., pi. 



xliv, figs. 1-4. 

 Fenestella dispanda, Hall. 1887. Pal. N. York, vol. VI, p. 114, pi. xliv, figs. 1-4. 



