POST-TERTIARY FOSSILIFEROUS DEPOSITS. 



73 



Tlie Ostracoda yield a kindred result. 



Ill the fossiliferous clays of Errol such species as Ci/there mlrabilis, Ctjtheridea 

 Surb^ana, and Cijtheropteroi Montrosiense, occur with an abundance sufficient to be 

 characteristic, while they are exceedingly rare in the western beds. 



The existence of an Arctic current on the east, such as that which now sweeps over 

 the Dogger Bank, might sufficiently account for the preponderance in question without 

 having recourse to any larger hypothesis. 



Height above the sea forty-five feet. 



The following Ostracoda have been found : 



Cijthere viridis, Miiller. 



— lutea, Miiller. 



— convexa, Baird. 



— villosa (G. 0. Sars). 

 concinna, Jones. 



— </Iobulifera, Brady. 



— emaryinata (G. 0. Sars). 

 — • tuberculata (G. 0. Sars). 

 — ■ mirabilis, Brady. 



— Dunelmensis (Norman). 

 Cijtlieridea pcqoillosa. Bosquet. 



— - punciillata, Brady. 



— Sorbi/ana, Jones. 

 Krithe glacialis, n. sp. 

 Cytlierura concentrica, n. sp. 



— yibba (Miiller). 

 Ci/fhero])teron latissimtim (Norman). 



— nodosum, Brady. 

 — ' arcuatim, n. sp. 



— injlatuvi, n. sp. 



— Motitrosiense, n. sp. 

 Sderochilus contortus (Norman). 



10 



