POST-TERTIARY FOSSILIFEROUS DEPOSITS. 



21 



The following Ostracoda were found : 



Cypris virens (Jnrine). 



— cinerea, Brady. 



— (jihha, Ramdolir. 

 Potamocypris fulva, Brady. 

 Candona lactea, Baird. 



— albicatis, Brady. 

 Lhnnicy there inojiinnfa (Baird). 



— mrliqua, n. sp. 

 Cy titer idea lacustris, G. O. Sars. 



— torosa (Jones). 



2. Paisley. 



When digging a foundation on the side of Oakshaw Hill, on which part of Paisley is 

 built, a hill which is at its summit 106 feet above the sea-level, and stretches in a gradual 

 slope 800 yards from east to west, a bed of Boulder Clay was laid bare, beneath which 

 was found the common Arctic shell of the district " with a bed of MytUus edtdis on its 

 surface." This Arctic-shell-clay itself, throughout the whole neighbourhood, rests upon 

 the Boulder Clay. The Rev. W. Eraser (from whose description we quote)^ states that 

 " this shell-bed was sixty-four feet above the mean sea-level, and the height rising over it 

 was forty-two feet, of what in ordinary circumstances would have been accepted as genuine 

 Till or old Boulder Clay," and attributes its position to the stranding of masses of ice- 

 carrying portions of the Boulder Clay on the ridge. 



Mr. J. Young, however, suggests that the position of this Upper Boulder Clay is due 

 either to diggings from the Lower Boulder Clay which have been removed and laid down 

 over more recent deposits, or to a slip of the Boulder Clay forming the crown of the hill 

 over more recent beds.^ 



This shell-clay, although intercalated in the way described, contains precisely the 

 same fauna as that which will be presently given from the Paisley district. 



^ 'Trans. Geol. Soc. of Glasgow,' vol. iv, p. 180. 



2 Ibid., p. 214. 



