24 



Mr. W. Carruthers on the Graptolites 



Graptolites Sedgwickii, Portl. DufF Kinnel, Dobb's Linn. 



millipeda, M'Coy. Lockerbie. 



lobiferus, M'Coy. Lockerbie. 



Nilssoni, Barr. Bran Bum, Garple. 



Nicoli, Harkn. Beld Craig, Glen Kiln. 



Becki, Barr. Beld Craig. 



Cladograpsus linearis, nov. sp. Hartfell. 



Diplograpsus rectangularis, M'Coy. Dobb's Linn, Hartfell, Lockerbie. 



foliaceus, March. Hartfell, Dobb's Linn. 



folium, His. Dobb's Linn, Bran Burn, Hartfell. 



mucronatus. Hall. Hartfell. 



nodosus, Harkn. Bran Burn. 



pennatus, Harkn. Duff Kinnel. 



teretiusculus, Harkn. Glen Kiln. 



bicornis, Hall. Hartfell. 



tricomis, nov. sp. Hartfell. 



Didymograpsus sextans, Hall. Hartfell. 



ramosus, Hall. Hartfell. 



MofFatensis, nov. sp. Hartfell. 



Cladograpsus linearis. 



Fragments of this fossil are frequently mingled with the 

 Diplograpsus foliaceus at Hartfell. It may have been before 

 noticed, and probably referred to some known species as a va- 

 riety. Having obtained in this locality a number of specimens 

 in a thin bed, where it occurred in great abundance and almost 

 alone, I am able to describe it as a distinct species. 



From a short and very slender base the zoophyte divides into 

 two stems, each supporting the cells on their upper sides. 



Branches are given off at u-regular distances from these principal 

 stems. The length of the polypidom has been very great : one 

 specimen I have been able to trace for nearly three feet. The 

 polypidom has been formed of a flexible substance ; for they are 

 seldom found in straight lines, but generally in curves, or bent, 

 without breaking, on themselves. The appearance of this zoo- 



