EXPLANATION OF PLATE V. 



Fig, 





Rastrites peregrinus, Barr. 



2. 



„ 



,, var. hybridus, Lapw. 



3- 



Monograptus atttmiatus, Hopk. 



4«. 



„ 



gregarius, Lapw. afi, portion enlarged. 



5«- 



>> 



argutus, Lapw. $b, portion enlarged. 



6a. 



,, 



Zobiferffus, M'Coy. 6b, portion enlarged. 



7a. 



„ 



runcinatus, Lapw. "jb, portion enlarged. 



8a. 



" 



Sandersoni, Lapw. 8b, portion enlarged ; 8c, proximal 

 extremity. 



9a. 



,, 



exignus, Nicb. gb, portion enlarged. 



10a. 





tenuis, Portl. (proximal extremity). io<r, distal ex- 

 tremity ; \ob, portion enlarged. 



11. 



,, 



tutriculatus, Barr. 



12. 



,, 



spiralis, Geinitz. 



13- 



,, 



crispus, Lapw. 



14. 



„ 



triangulatus, Harkn. 



15- 



„ 



Sedgwickii, Portl. 



16. 



,, 



communis, Lapw. 



17- 



„ 



Jimbriatus, Nich. 



18. 



„ 



proteus, Barr. 



19. 



„ 



concinnus, Lapw. 



20. 



> J 



Hisingtri, Carr. Vsx.jactilum, Lapw. 



21. 



,, 



Barrandei., Suess. 



22. 



,, 



leptotheca, Lapw. \ob, portion enlarged. 



23- 



24a. 



25- 



" 



Riccartonensis, Lapw. 



p7-iodon, Brown. 24b, portion enlarged. 



cyphus, Lapw. 



