470 Proceedings of the 



twenty. The breadth of the polypidoni is about two-thirds of 

 a line. 



This species is found in the shales at Hartfell. 



The specific name is derived from the locality where it is 

 found, which is in the neighbourhood of Moffat. 



X. Mr John Livingstone exhibited a fine specimen of the 

 Poterioceras ventricosum of M w Coy, which was obtained by 

 him in August 1854, from the carboniferous limestone beds 

 quarried at Turniedykes, near Gorebridge. He considered it 

 to be the first instance of this fossil having been noticed in 

 Scotland. 



Thauks were voted to the Office-Bearers, and the Society 

 adjourned to November 1858. 



