117 



Monticulipora {Mmiotrypa) qmdrala, 



Nicholson 1881. Structure and Aff. Genus Monticuli- 

 pora, &c., p. 179, fig. 36. 



Monotrypdla qvadrata, XSlviah 1889. Geol. Surv. Canada, Contr. Micro- 



Palfeont. Canibro-SiUir. rocks, Ac, vol. I, 

 pt. 2, p. 36. 



Lower bsds, T. C. Weston, 1884: "several fragments.'' 



Batostoma Manitobense, Ulrich. 



Batoftoma Manitobense, Ulrich. .1889. Geol. Surv. Canada, Contr. Mioro-Palajont. 



Cambro-Silur. rocks, &c., p. 33, pi. 9, figs. 3, 3, a-c. 



Lower beds, T. C. Weston and A. McCharles, 1884: "several small 

 examples." 



Artheoclema angularb, Ulrich. 



« 

 Arthrodema a7igidare, Ulrich. .1S89. Geol. Surv. Canada, Contr. Micro-Palseont. 



Cambro-Silur. rocks, &c. , p. 45. 



" . . 1890. Geol. Surv. Illinois, vol. VIII., p. 641, pi. 29, 



figs. 6, a-h. 



Lower beds. Dr. R. W. Ells, 1875, and T. C. Weston, 1884 : " several 

 segments." 



Helopora Haerisii, James. 



Hdopora Harrisii, James. .1883. The Palaeontologist, No. 7, p. 59, pi. 2, figs. 2a-h. 

 " " Ulrich. . 1889. Geol. Surv. Canada, Contr. Mioro-PaliBont. Cam- 



bro-Silur. rocks, &c. , p. 45. 



Lower beds. Dr. R. W. Ells, 1875, and T. C. Weston, 1884 : "a num- 

 ber of very slender segments." 



SCEPTROPORA FACULA, Ulricll. 



Sceptroporafacvla, Ulrich. .1888. Am. Geologist, vol. I., p. 229. 



" " " ..1889. Geol. Surv. Canada, Contr. Micro-Palceont. 



Cambro-Silur. rocks, ifec, p. 46, figs. 2, u,-d. 



Lower beds. Dr. R. W. Ells, 1875, and T. 0. Weston: "detached 

 egments," abundant. 



