POST-TERTIARY FOSSILIFEROUS DEPOSITS. 77 



Cytheridea papillosa. Bosquet. 

 Loxoconcha impressa (Baird). 

 Cytherura undata, G. O. Sars. 



— similis, G. 0. Sars. 



— Sarsii, Brady. 



— ceUuIosa (Norman). 



— clathrata, G. 0. Sars. 

 Cytheropteron latissimiim (Norman). 

 SderocJiilus contorius (Norman). 



31. Annochie, Aberdeenshire. 



At Annochie, about five miles north of Peterhead, a bed of fine fossiliferous clay 

 occurs, passing immediately from the shore under the beach, thus occupying the same 

 position as many outcrops of clay along the Clyde. As in the corresponding Clyde 

 beds, such species as Awinus flexuosiis, Leda pygmcua, and Nucida tenuis are very 

 abundant. 



Height a few feet above sea-level, the bed passing under the beach. 



The followinff Ostracoda were found : 



'O 



Cythere glohuUfera, Brady. 



— JDimelmensis (Norman). 

 Cytheridea inornata, n. sp. 

 Cytherura complanata, n. sp. 

 Cytheropteron latissimum (Norman). 

 — Montrosiense, n. sp. 



B. — Arctic Shell-beds, 



Although we have grouped together in one class the sands and clays characterized by 

 an Arctic fauna, it does not necessarily follow that they belong to one period only of the 

 great Glacial Epoch. 



In many of the periods (possibly marked by fluctuations in the intensity of 

 the climate) comprised within the epoch during which an Arctic climate prevailed and 

 disappeared, marine clays must have been deposited and become the habitat of species 

 now relegated to the Arctic circle. 



