The Ancient Lakes of Eclinhurgh. 143 



MOLLUSCA. 



Limncea peregra (Muller). Frequent, but many of them 



fragmentary. 

 Planorbis glctber, Jeffreys. Scarce. 

 Valvata piscinalis (Muller). 



Fisidium pusillum (Gmelin). Frequent often perfect. 

 „ fontinale. 



OSTKACODA. 



Cypria Icevis (0. F. Muller). Eather scarce. 



„ Serena (Koch). Eather scarce. 

 Cypris incongruens, Eanidohr. Eare. 

 Erpetocypris reptans (Baircl). Frequent. 

 Cypridopsis villosa (Jurine). Common. 

 Potamocypris fulva, Brady. Frequent. 

 Candona Candida (Muller). Very common. 



„ lactea, Baird. Eather rare. 



„ puhescens (Koch). Eare. 

 Ilyocypris gibba (Eamdohr). Common. 

 Limnicythere sancti - patricii, Brady and Eobertson. 



Frequent. 

 Cytheridea lacustris (G. 0. Sars). Common. 



CORSTORPHINE LaKE NEAR STATION. 



This deposit is about 200 feet above sea-level, and 4 miles 

 from the sea ; in it Molluscan remains were abundant and 

 in good preservation. Ostracod shells were also numerous. 

 The following are the species of MoUusca and Ostracoda 

 identified by us : — 



MOLLUSCA. 



Pisidium fontinale (Draparnaud). Frequent. 



„ nitidum, Jenyns. Frequent. 

 Planorbis glaher, Jeffreys. Eather common. 



„ nautileus (Linne). Eare. 

 Limnoia peregra (Linne). Very common. 



„ truncatnla (Muller). Not common. 



