FOSSILTPEROUS BOULDER-CLAYS. 7 



was retained in a sieve of one eighth of an inch mesh, and consisted of small stones more 

 •or less worn and striated. The remaining 6 lbs. was chiefly sand. 



The following Ostracoda were found : 



Cytliere viridis, Milller, 



— mirabilis, Brady. 



— Bunelmensis (Norman). 



— tubercidata (G. 0. Sars). 



— ienera, Brady. 



— lutea, Miiller. 

 Cytheridea punctillata, Brady. 



— papulosa, Bosquet. 

 Loxoconcha impressa (Baird). 

 Cytherura undafa, G. 0. Sars. 

 Cytheropteron latissimum (Norman). 



2. Burn of Haster. 



Along the banks of the Burn of Haster, near Wick, Mollusca are more abundant than 

 at Wick Harbour, although the Boulder Clay is very coarse and contains many stones of 

 large size. 



The following Ostracoda were found : 



Cy there vUlosa (G. 0. Sars). ' 



— concinna, Jones. 



— FinmarcJnca (G. O. Sars). 

 Cytheridea punctillata, Brady. 

 Xestoleheris depressa, G. 0. Sars. 

 Cytherura undata, G. 0. Sars. 

 Cytherideis suhspiralis, nov. sp, 



IIL A third clay, which has been improperly, we believe, termed Boulder Clay, is 

 precisely of the same age, although not of the same physical character, as the stratified 

 shell-bearing clays of the Clyde and other districts. An example may be seen near Lag 

 Arran, overlying the older Boulder Clay from which it is very distinctly separated ; it is 

 hard and compact, but not so hard and compact as the clay on which it rests, while the 

 stones it contains are generally smaller, much more worn, and, except in a few 



