68 



POST-TERTIAUy ENTOMOSTRACA. 



22. Cleshmahew's Tile-works, One Mile South of Stranraer. 



The following section has been exposed : 



1. Upper clay, mixed with sand, with polished and striated stones and 



worn flint pebbles . . . . . 7 to 8 ft. 



2. Brown clay ..... Very variable. 



3. Blue clay rising into hummocks and occasionally intersected by 

 lenticular beds of sand and gravel, with polished and striated stones 



and worn flint pebbles . . . . . 7 to 8 ft. 



4. Gravel, sufflciently porous to drain the water from the workings, not 

 pierced through ..... 



The shells are found in the brown clay (2) and the blue clay (3). 



The species of Mollusca, which are not water-worn, although ill-preserved, include 

 such an extremely Arctic type as Leda arctica, which is covered with its epidermis and 

 is associated with L. pygmcBci and L. pernula. 



The shell-clay consists of 92 per cent, fine mud, 6 per cent, sand, 2 per cent, small 

 gravel. 



Height above the sea fifty feet. 



The following Ostracoda were found : 



Cythere lutea, Miiller. 



— villosa (G. 0. Sars). 



— Dimelmensis (Norman). 

 Cytheridea punctillata, Brady. 

 Loxoconcha tamarindus (Jones). 



