177 

 Orthis (Dalmanblla) testudinaria, Dalman. 



Orthis tesludindria, Dalman 1828. Kongl. Svenska Vet-Akad. Handl. 



for 1827, p. 115, pi. 2, fig. 4. 



Conrad 1839. Ann. Rep. N. York Geol. Surv., p. 63. 



Orthis striatula, Emmons 1842. Geol. N. York, Rep. Second Distr., 



p. 394, fig. 3. 



Orthis testudinaria [?) Emmons 1842. Ibidem, p. 404, fig. 4. 



Orthis testudinaria.. Hall 1847. Pal. N. York, vol. I., p. 117, pi. 32, 



figs. 1, a-l. 



u 11 Billings 1856. Canad. Nat. and Geol., vol. I., p. 40, 



fig. 1. 



" M " 1863. Geol. Canada, p. 165, figs. 144, a-c. 



And of numerous European and N. Am. 

 palcEontologists . 



Dalmanella testudinaria. Hall 1892. Pal. N. York, vol. VIII., pt. 1., pp. 



190 and 206, pi. 5b, figs. 1-4. 

 Orthis (Dahiianella) testudinaria, Winchell 



and Sohuchert 1893. Lower Silur. Braoh. Minn., p. 441,. 



pi. 33, figs. 17-22. 



Lower Fort Garry, Dr. R. Bell, 1880, and T. C. Weston, 1884 : a few 

 badly preserved specimens. In this connection it may be noted that 

 M. Friedrich Schmidt expressed the opinion that the specimens in the 

 Museum of the Survey from the Trenton limestone at St Johns, P.Q., at 

 Ottawa, at Jessups' Rapids on the Bonnechere, and at the Bay of Quinte, 

 which E. Billings identified with this species, are the same as the Russian 

 form called Orthis testudinaria, Dalman. 



Platystrophia biforata, Schlotheim (Sp). 



Terebratuhtcs biforatus, Schlotheim 1820. Petretactenkunde, p. 265. J'or a full 



list of European synonyms of this species 



see Davidson's Mon. Brit. Silur. Brach., 



pt. VII., p. 268, under the name Orthis 



biforata . 

 Spirifer Sheppardi, Ca,stelne£\,u 1843. Essai sur le Syst. Silur. de I'Amer. 



Septentr., p. 42, pi. 14, fig. 15. 

 Detthyris brachynota. Hall 1843. Geol. N. York, Rep. Fourth .Distr., 



p. 70, fig. 6. 

 Orthis and Belthyris, Ovi'en 1844. Geol. Expl. Iowa, Wiscons. and 111., 



pi. 15, figs. 3 and 7. 

 Belthyris lynx. Hall (partim — but not of 



Eiohwald) 1847. Pal. N. York, vol. I., p. 133, pi. 32d, 



fig. 1. 

 Orthis biforata, Billings 1856. Canad. Nat. and Geol., vol. I., p. 



206, figs. 6-10. 



Orthis lynx, Billings 1863. Geol. Canada, p. 167, fig. 149. 



Platystrophia regularis, Shaler 1865. Bull. Mus. Comp. Zoology, p. 67. 



Platystrophia lynx, Hall 1892. Pal. N. York, vol. VIII., pt. 1, pp. 



202 and 223, pi. 5b, fig. 10. 

 4 



