The Ancient Lakes of Edinburgh. 139 



pansions existed here also during some part of the glacial 

 period. 



In conclusion we wish it to be distinctly understood, that 

 from the furtive manner in which the material from these 

 old lake deposits was collected, the number of MoUusca and 

 Ostracoda cfiven in our lists cannot be taken as exhaustive 

 for all or any of the deposits, but tentative merely, and that 

 new exposures of these or any other lake deposits in or 

 around Edinburgh would likely yield more species than we 

 have here recorded. In the division of labour connected 

 with this paper, it should be stated that the material was 

 collected by Mr J. Bennie, and the naming of the species 

 and the identification of their characters was done entirely 

 by Mr Scott. 



The "Nor' Loch." 



We were able to procure from the old bed of this loch 

 only a small quantity of material for examination, and in it 

 organic remains, both animal and vegetable, were fairly 

 abundant. Among the organic remains were several species 

 of Ostracoda, — two of which, viz., Cypris prasina, Fischer, and 

 Candona Candida (Midler), were moderately common, — and 

 some imperfectly preserved molluscan shells. 



The following are the species of Ostracoda and Mollusca 

 from this deposit identified by us. 



It may be stated that the site of the loch is about 2 J miles 

 from the sea, and about 150 feet above sea-level. 



MOLLUSCA. • 



Pisidium pusillum (Gmelin). One valve. 



Limnma peregra (Miiller). A few imperfect specimens. 



OSTEACODA. 



Cypria ophthalmica (J urine). Eather scarce. 

 Cypris prasina, Fischer. Common. 

 Erpctocypris reptans (Baird). Eather scarce. 

 Candona Candida (Miiller), c^ ?• Both forms common. 



„ lactea, Baird. Frequent. 

 Lininicythcre inopinata (Baird). Frequent. 



