290 CONTRIBUTION'S TO CANADIAN PALAEONTOLOGY. 



(S.) RiiYNCHONELLA PUONUS, Martin. 



The synonymy of this species has already been given on pages 230 and 231. 



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

 1888 ; and Dawson Bay, Lake Winnipe;;(.)sis, at the niciuth of the Red 

 Deer River, J. B. Tyrrell, 1889 : one small but characteristic specimen 

 from each uf these localities. 



(S.) Pentamerus comis, Owen. 



Atrypa romis, Owen. 1S;V2. Rep. Geol. Surv. Wise, Iowa and Alinn., p. ,')>S3, pi. 



iii A, tig. 4. 

 Peiilama-ux occideii/ali-<, Hall. 1858. Geol. Iowa, vol. I, pt. 2, p. .514, pi. vi, figs. 



2a-e. Not Pnilamerus orcidfiilnlh. Hall, 1852. Pal. St. N. 



York, vol. II, p. 341, pi. Ix.xi.x, figs. 1 a-s, and 2. 

 Peiilamerusi/a/eatiformis, Meek and VVorthen. 1866. Re]). Geol. Surv. Illinois, vol. 



II, p. 325 (foot-note). 

 Gyinditla orcidentali'i, U&ll. 1867. Pal. , St. N. York, vol. IV, p. 380, pi. Iviii A, 



figs. 1-8. 

 Pfiilaiiifrus romis, Meek and Worthen. 1868. Geol. Surv. Illinois, vol. Ill, p. 428, 



pi. xiii, figs. 6a-c. 

 " Walcott. 1884. PaL Eureka distr. Nevada, p. 1.59, pi. iii, 



figs. 4 and 7 ; pi. xiv, figs. 15, 15a, b ; and pi. xv, figs. 5, 



5a, b. 



" Western shore of Dawson Bay, from slabs apparently derived from 

 the neighbouring cliffs,'' J. W. Spencer, 1874 : several single and for the 

 most part ventral valves. Lake Manitoba, on the north-west side in the 

 Stringocephalus zone, at Monroe and Pentamerus points, abundant, and 

 on the east side, at Steep Rock Point, one specimen • J. B. Tyrrell and 

 J. F. Whiteaves, 1888. South-west and west shores of Lake Winnipeg- 

 osis, at Weston Point and a small island off Weston Point ; at Devils 

 Point (in the beds beneath the Stringocephalus zone) ; and on the west 

 side of Pelican Bay, J. B. Tyrrell, 1889 : a few specimens from each of 

 the.se localities. Ai)inidant also at many exposures of the Stringocephalus 

 zone on the islands and shores of Dawson Bay, where it was collected by 

 Messi-s. Tyrrell and Dowling in 18S9. 



Next to Atrypa f/'UcvJufix and its variety asp<-ra this is the commonest 

 species of brachiopoda in the Devonian I'ocks of this district, where it is 

 usually found associated with BtriiKjuei'jilialus. 



(S.) Strinoocephalus Burtini, Def ranee. 



Slryijocephaluti Burti'iii, Defrance. 1827. Diet, des Se. Nat., vol. LI, p. 102, and 



Atlas, pi. Ix.Kxv, figs. 1 and la. 

 Tertbratula porrecta, Sowerby. 1827. Min. Conch., pi. 576, fig. 1. 



