Pal/eontographical Society, 1903. 



BRITISH GRAPTOLITES. 





3b. 



2c. 





2d. 





"ki 





4a 





r 







3c. 



/ 



6a. 



6b. 



3h. 



X ... „ 



7a. 



7b. 



1 



E. M. /,'. // 



NEMAGRAPTUS iCOENOGRAPTUS' 



.. Derby. 



