146 Proceedings of the Royal Physical Society. 
unlikely it may appear that the shells of Ostracods can resist 
decomposition, yet here we have proof that they have done 
so. A considerable number of the freshwater foraminifer, 
Deflugia, sp., also occurred along with the Ostracoda. 
MOLLUSCA. 
Pisidiwm pusillum (2),Gmelin. One immature specimen. 
OSTRACODA. 
Cypria ophthalmica (Jurine). This species was of 
frequent occurrence, but few were well pre- 
served, and some had the appearance of being 
coated with a ferruginous dust. 
» serena (Koch). One or two specimens. 
Cypris incongruens, Ramdohr. One specimen. 
Erpetocypris olivacea (?), Brady and Norman. One speci- 
men. 
Candona rostrata, Brady and Norman. One specimen. 
This is the first record of the occurrence of this 
species as a post-tertiary fossil, but one of the 
Authors has since found it in a somewhat 
similar deposit in Ross-shire, in moderate 
abundance. ; 
Candona candida (Miller). One or two specimens. 
Limnicythere inopinata (Baird). One specimen. 
MOLLUSCA 
Found in the various Lacustrine Deposits. 
The following is a full list of the MoLLUSCAN remains 
observed in the various lacustrine deposits referred to in the 
preceding notes :-— 
Spherium corneum (Linné). 
Pisidium fontinale (Draparnaud). 
pusillum (Gmelin). 
“ mitidum, Jenyns. 
Valvata pisconalis (Miller). 
cristata, Miiller. 
3) 
3? 
