356 Dr. H. A. Nicholson on the Dish'ihution of Oraptolites, 



Table showing the Geological Distribution of the Species of 

 Graptolitidce in Britain, 



Species. 



o 

 ni 



^ 







Dictyonema socials, Salt 



gracile, Hall (?) , 



Dicnograpsus Loo;ani, Hall : , 



multiplex, Ntch 



octobrachiatus, Hall 



reticulatus, Nich 



Tetragrapsus bryonoides, Hall 



crueller, Hall 



Headi, Hall 



quadribrachiatus, Hall 



Phyllograpsus angustifolius, Hall .... 



typus, Hall 



Dendrograpsus Hallianus, Prout 



flexuosus, Hall 



Climacograpsus antennarius, Hall .... 



bicornis, Hall 



teretiusculus, His 



tuberculatus, Nich 



Diplograpsus acuminatus, Nich 



angustifolius, Hall 



cometa, Gein 



confertus, Nich 



Harkuessii, Nich 



mucronatus, Hall 



nodosus, Harhn 



palmeus, -Sarraw<7e (=:D. io\mvci,His.) 



pristiniformis, Hall .... 



pristis, His 



putiUus, Hall 



tamariscus, Nich 



vesiculosus, Nich 



"Wbitfieldii, Hall 



Didymograpsus affinis, Nich 



anceps, Nich 



bifidus. Hall 



divaricatus, Hall 



flaccidus, Hall 



Seminus, His 

 [urchisoni, Beck 



nitidus, Hall 



patulus, Hall 



serratulus, Hall 



sextans, Hall 



V-fractus, Salt 



