Royal Physical Society. 



467 



Graptolites Sagittarius, Lam. Lockerbie. 



tenuis, Portl. Lockerbie, Dobb's Linn. 



convolutus, His. Lockerbie. 



Sedgwickii, Portl. Duff Kinnel, Dobb's Linn. 



millipeda, M'Goy. Lockerbie. 



lobiferus, 31' Coy. Lockerbie. 



Nilssoni, Barr. Bran Burn, Garple. 



Nicoli, Harhn. Beld Craig, Glen Kiln. 



Becki, Barr. Beld Craig. 

 Cladograpsus linearis, nov. sp. Hartfell. 

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



foliaceus, Murch. Hartfell, Dobb's Linn. 



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



mucronatus, Hall. Hartfell. 



nodosus, Harhn. Bran Burn. 



pennatus, Harhn. Duff Kinnel. 



teretiusculus, Harhn. Glen Kiln. 



bicornis, Hall. Hartfell. 



tricornis, nov. sp. Hartfell. 

 Didjmograpsus 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 

 variety. Having obtained in this locality a number of speci- 

 mens 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. 



