Plate VIII. 



Page 



Fig. 1. Camarotoechia litchfieldensis SCHUCHEKT, var. anyustata nov. var. . . 22 



Fig. 2. Spirifer modestus HALL, var. striatissimus nov. var . 26 



Fig. 3. Uncinulus septentrionalis nov. sp 22 



Fig. 4. Spirifer vanuxetni HALL, var. prognostica SCHUCHEBT 27 



Fig. 5. Atrypa reticularis LINN 23 



Eig. 6. Pterinea cf. aviculoidea HALL 28 



Fig. 7. M*cuto(?) sp 29 



Fig. 8. Grammysia (?) triangulata nov. sp 28 



Fig. 9. Hormotoma (?) sp 31 



Fig. 10. Loxonema fitchi HALL 31 



Fig. 11. Holopea sp 31 



Fig. 12. Hormotoma (?) sp 30 



Fig. 13. Encrinurus sp. . 34 



Fig 14. Proetus leptorhachis nov. sp 33 



Fig. 15. Leperditia symmetrica nov. sp 37 



Fig. 16. Primitia arctica nov. sp 39 



Fig. 17. Frammia dissimilis nov. gen. & sp., the incomplete head 35 



Fig. 18 two transverse sections across the head .... 



Fig. 19. ? thorax and pygidium found in connection with 



the head 36 



Fig. 20. Platyceras ellesmerelandi nov. sp 32 



