NOTTINGHAMSHIRE LAND AND FRESHWATER SHELLS. 197 
NOTTINGHAMSHIRE LAND & FRESHWATER SHELLS. 
BY E. J. LOWE, F.R.S., ETC., AND CG. T. MUSSON, 
The following list of the Nottinghamshire Mollusca may be of use to 
some readers of the ‘“‘ Midland Naturalist.” It is corrected to the present 
time, June, 1879. 
AQUATIC. 
CLASS I. CONCHIFERA OR BIVALVES. 
FAMILY I., SPHZRIIDA. 
GENUS I., SPHERIUM. 
Spherium corneum, very common. 
var. Pisidioides, Canal at Beeston. 
var. flavescens, ‘at Beeston. 
var. nucleus, at Beeston. 
rivicola, common in the Trent and the Canals. 
ovale, rare, Canal at, Beeston (B. 8. Dodd.) 
lacustre, Ponds at Beeston and Barton. 
var., brochoniana, Clumber Lake and Attenborough. 
GENUS II., PISIDIUM. 
Pisidium amnicum, common in the Canals and River Trent, at Beeston. 
fontinale, ditch at Barton. 
var. pulchella, dyke at Beeston and Stanton-on-the-Wolds. 
var. cinerea, Beeston and Lenton. 
pusillum, Canal at Nottingham and elsewhere. 
var. obtusalis, rare at Beeston. 
nitidum, Beeston and Nottingham Meadows, not common. 
roseum, rare at Sawley. 
FAMILY II., UNIONIDZ. 
GENUS I., UNIO. 
Unio tumidus, common in the Trent and the Canals. 
var. radiata, not uncommon in the Canals. 
var. ovalis, common. 
pictorum, common in the Trent and the Canals. 
var. radiata, Highfield House Lake. 
var. curvirostris, ,, op ¥ 
GENUS II., ANODONTA. 
Anodonta cygnea, common. 
var. rostrata, Canal, Beeston. 
var. radiata, Canal, Wollaton. 
anatina, Canal, Wollaton, and several varieties. 
FAMILY I11., DREISSENIDA., 
GENUS DREISSENA. 
Dreissena polymorpha, common. 
CLASS Il. GASTEROPODA OR UNIVALVES. 
ORDER I., PECTINIBRANCHIATA. 
FAMILY L., NERITIDA. 
GENUS NERITINA. 
Neritina fluviatilis, common on submerged stones, 
FAMILY I1., PALUDINIDA. 
GENUS I., PALUDINA, 
Paludina vivipara, common. 
