IRISH AND ENGLISH OSTRACODA. 101 



2. PORTRUSH. 



The raised-beach at Portrush consists chiefly of shell debris. Like a large number 

 of the raised beaches the material loses little in washing — only 4 per cent., which passes 

 off in fine mud. 



The deposit is uneven in thickness, filling up irregularities of the rock on which it 

 rests. Its area is greatly hidden, but it is possibly 100 yards square. The fauna it 

 contains is entirely recent. 



Heiaht above the sea fifteen feet. 



The following Ostracoda were found 



'o 



Pontocypris mytiloides (Norman). 

 Cythere viridis, Miiller. 



— tenera, Brady. 



— pellucida, Baird. 



— crispata, Brady. 



— albo-maculata, Baird. 



— gihhosa, Brady and Robertson. 



— convexa, Baird. 



— villosa (G. O. Sars). 



— pulchella, Brady. 



— angulata (G. O. Sars). 



— emarginata (G. O. Sars). 

 Cytheridea punctillata, Brady. 



— torosa (Jones). 



— elongata, Brady. 

 Eucythere Argus (G. 0. Sars). 

 Loxoconcha impressa (Baird). 



— tamarindm (Jones). 



— muUifora (Norman). 

 Cytherura nigrescens (Baird). 



— similis, G. O. Sars. 



— angulata, Brady. 



— gihha (Miiller). 



— undata, G. 0. Sars. 



