32 Stewart— List of Estuarine Clay Fossils. 



Acera bullata, Akera bullata, F. & H. In the Belfast bed abundantly, 

 but restricted to the *zone of Thracia convexa. Plentiful also at Larne, 

 where specimens are of small size, apparently the variety nana. 



Action tornatilis, Tornatella fasciata, F. & H. Belfast deposit, (fide 

 Grainger). 



Scaphander lignarius. Rare. Three or four specimens only. 



Philine aperta. In abundance. 



Anomia ephippium. This extremely variable shell is distributed through- 

 out the clay in some plenty. 



Anomia patelliformis. Rare, (Grainger). 



Ostrea edulis. Shell beds, made up nearly altogether of the common 

 oyster, occurred near the base of the deposit, and again repeated near 

 the upper surface. 



Ostrea edulis, var. hippopus. Immense shells of this deep-water variety 

 scattered through the clay, mainly in the median portion of the de- 

 posit. 



Pecten varius. Generally distributed and abundant. 



Pecten opercularis. Along with the last species, and almost equally 

 abundant. 



Pecten maximus. Scattered throughout, rather plentifully. 



Lima hians. Very rare in the Belfast bed, abundant in the corresponding 

 deposit in Larne Lough. 



Mytilus edulis. Abundant, especially in the basal and superficial por- 

 tions of the clay. 



Mytilus modiolus, Modiola modiolus, F. & H. Rare at Belfast, plentiful 

 in the Larne bed. 



Mytilus adriaticus, Modiola tulipa, F. & H. Occurs both at Belfast and 

 Lame, but is rare. 

 tilus adriaticus, var. ovalis. " Occurred in excavating a channel in 

 Belfast Harbour" (J. G. Jeffreys). Some specimens dug out at the site 

 of the new floating dock appear to belong to this variety. 



Modiolaria marmorata, Crenella marmorata, F. & H. Very rare at Bel- 

 fast, frequent at Larne. 



Nucula nucleus. Very abundant in the Belfast beds ; rare at Larne. 



Leda minuta, Leda caudata, F. & H. A single valve, (Grainger). 



• See abstract of paper lead by the author on 8th March, in Eighth 

 Annual Report of Belfast Naturalists' Field Club (1871). 



