Fig. 

 F.g. 

 Fig. 

 Fig. 

 Fig. 

 Eig. 

 Fig. 

 Fig. 

 Fig. 

 Fig. 10, 

 Fig. 11 

 Fig. 12, 

 Fig. 13, 

 Fig 14. 

 Fig. 15, 

 Fig. 16. 

 Fig. 17, 

 Fig. 18 

 Fig. 19, 



Plate Vlll. 



Page 



Cainarotoecliia litchfieldensis Schuchekt, var. angnstata iiov. vai-. . 22 



Spirifer tnodestus Hall, var. striatissimus nov. var. . . 2() 



Uncinulus septentrionalis nov. sp. . . 22 



Spirifer vanuxemi Hall, var. prognostica Schucheut . . 27 



Atrypa reticularis Linn. . . .... 23 



Pterinea cf. aviculoidea Hall . . . 28 



Nucula{7) sp. . 29 



Gratnmysia (?) triangulata nnv. sp. . ... . . . .28 



Hormotoma (?) sp. . . .31 



Loxonema fitchi Hall . . . . ... . ... .31 



Holopea sp. . ' .... . .... . . .31 



Hormotoma (?) sp. . . .... .... . . . . 30 



Encritiurus sp. . . . . . . . . 34 



Proetus leptorhachis nov. sp. . ... . . 33 



Leperditia symmetrica nov. sp. . . .37 



Primitia arctica nov. sp. . . . . . ... 39 



Framm,ia dissimilis nov. gen. & sp., the incomplete liead . . 35 



the incomplete head . 

 two transverse sections across the head . . . 

 thorax and pygidium found in connection with 

 the head . . ... ... 



Fig. 20. Platyceras ellesmerelandi nov. sp. ... 



36 

 32 



