53 



Hespeler, T. 0. Weston, 1867 : one specimen. Prof. Nicholson, who 

 has examined a portion of this specimen, says (op. cit.) that its minute 

 structure "is practically destroyed by dolomitization, but all its general 

 characters would lead to the belief that it is very closely related to 

 Stromatopora typica, Rosen, and is probably identical with it." He further 

 states that CcKnostroma constellatum of Spencer,* from the Niagara lime- 

 stone near Hamilton, does not appear to be any way distinguishable as 

 regards its general characters from G. Galtense, Dawson," and that he is 

 " strongly disposed to think that it is really identical with S. typica, 

 Rosen. If the above view should prove to be correct, then Gcenostroma 

 Galtense, Dawson, and C constellatum, Spencer, must be considered as 

 synonyms of iS'. typica, Rosen." 



Steomatopoea antiqua, Nicholson and Murie. 



Pachystroma aniiqva, Nicholson & Murie. .1878. Journ. Linn. ,Soc., vol. XIV., p. 



224, pi. 4, figs. 2-5. 

 Stromatopora antiqua, Nicholson 1886. Mon. Brit. Stromatop, pt. 1, p. 



17, pi. 5, figs. 8-11. 



Durham, J. Townsend, 1884 : one specimen, which is now in the 

 Museum of the Survey. 



Steomatopoeella. Species undeterminable. 



Durham, J. Townsend, 1884 : two specimens, which are too imperfect 

 to admit of their specific relations being satisfactorily ascertained. 



BRACHIOPODA. 



Teimerella geandis, Billings. 



Trimerella grandis, Billings 1862. Geol. Surv. Canada, Pal. Foss., vol. I., 



p. 166, figs. 151, a-h. 

 " " Dall 1870. Am. Journ. Conch., vol. II., pt. 2, p. 



160 and (1871) vol. VII., p. 82. 

 " " Davidson & King. 1874. Quart. Journ. Geol. Soc. Lond., vol. 



XXX., p. 144, pi. 13, figs. 2 and 3. 

 " " Nicholson 1875. Rep. Pal. Prov. Ont., p. 67, and p. 68, 



fig. 37. 

 Hall 1892. Pal. N. York, vol. VIII. , pt. 1, pis. iA , 



figs. 1 and 2, and iB, figs. 2, 3, 4 and 5. 



Casts of the interior of shells of this species are abundant at Gait, 

 Guelph, Elora, Hespeler and Durham, but the writer has seen only one 

 specimen in which any portion of the test is preserved. This is an 

 imperfect pedicle valve collected at Durham by Mr. J. Townsend in 1883, 

 which shows part of the exterior of the test and most of the characters 



*Bulletin No. 1 of the University of the State of Missouri, p. 48, pi. 6., fig. 11. 



