2744 Zoological Society. 



Clausilia nigricans. Very common ill moss and on trees. 

 Carychium minimum. Plentiful among dead leaves, in woods. 

 Acme fusca. Two, from Caistor Wood. 

 Lymneeus auricularius. Common in the river. 

 Lymnaus pereger. Very common in ditches. 

 Lymneeus stagnalis. Common in the marshes. 

 Lymnaus paluslris. Not uncommon. 

 Lymnaus truncatulus. River at Whitlingham. 

 Amphipeplia glulinosa. Rare (See Zool. 2150). 

 Velletia lacustris. Common on the stems of Sparganium simplex. 

 Ancylus fluviatilis. On the Nuphar leaves, in the river at Heigham. 

 Physa fontinalis. Common. 

 Planorbis corneus. Rather common in ditches. 

 Planorbis albus. Sparingly in the river, on aquatic plants. 

 Planorbis carinatus. Not uncommon. 

 Planorbis marginatus. Common. 

 Planorbis vortex. Common on aquatic plants. 

 Planorbis spirorbis. On grass in wet meadows. 

 Planorbis nitidus. Not very common, on Sparganium stems. 

 Planorbis contortus. Common in ditches. 



Segmentina lineata. Rare, near Yarmouth, Heigham Marshes. 

 Cyclostoma elegans. Whitlingham Far Wood ; plentiful in one small spot only. 

 Cyclas cornea. Common. 

 Cyclas calyculata. Not uncommon. 

 Pisidium pulchellum. Rare, Heigham ditches. 



Pisidium amnicum. Common, in the river and some ditches adjoining. 

 Anodon cygneus, var. anatina. Very common in the river. Several other varieties 

 not uncommon. 



Unio pictorum. In the river. 



Unio pictorum, var. rostrata. In the river at Heigham. 



Norwich, 

 December 17, 1849. 



W. K. Bridgman. 



Proceedings of the Zoological Society. 



Monthly General Meeting, February 7, 1850. — W. Yarrell, Esq., in the chair. 



The Lord Bishop of Oxford, E. W. H. Holdsworth, Esq., and Thomas Paine, 

 Esq., were elected Fellows of the Society. Miss M. A. Sulivan, Rev. John L. Petit, 

 and Thomas Tooke. jun., Esq., were proposed as candidates for the Fellowship ; and 

 Dr. H. Schlegel, of Leyden, for election as a Corresponding Member. 



In their Report on the affairs of the Institution, the Council announced that they 

 had accepted the liberal offer made by Col. Peyronnet Thompson, on the part of his 

 son, to present to the Society a pair of living Indian bisons (Bos Gaurus), which he 

 proposes to deliver to the Society's agent at Bombay, for transmission to this 

 country.— D. W. M. 



