3392 Mollusks. 



Anodon cygneus. Abundant in the lake at Highfield House, in 

 the Old Trent at Sawley, and in mill-dams at Bulwell. 



A. cellensis. Abundant in the lake at Highfield House, and in the 

 river Trent near Beeston. 



A. anatinus. Abundant in the lake at Highfield House, a stream 

 and canal at Lenton, and the rivers Trent and Soar. 



A. avonensis. Rare in the river Trent near Beeston. 



A. anatinus, var. (very ventricose). In the lake at Highfield House. 



Unio pictorum. Common in the lake at Highfield House, the river 

 Trent at Beeston and Sawley, and the river Soar at Thrumpton. 



U. tumidus. Not uncommon in the river Trent near Beeston, and 

 rare in the lake at Highfield House. 



U. ovalis. Found in the lake at Highfield House and in the river 

 Trent at Beeston. 



U. Deshayesii, (if a var.) Not common in the river Trent near 

 Beeston. 



Dreissena polymorpha. Very common and large in the lake at 

 Highfield House, common in the canal at Lenton (where it is small), 

 the river Soar at Thrumpton, and a pond at Wollaton, and in few* 

 numbers in the river Trent near Beeston. 



Land Shells. 



Helix aspersa. Very common at Beeston and around Nottingham. 



H. hortensis. Rare at Bulwell. 



H. nemoralis. Very abundant in most hedges. 



H. hybrida (if a var.) Rare at Highfield House. 



H. arbustorum. Rare at Thrumpton, Sawley, and Highfield House. 



H. pulchella. Tolerably abundant at Highfield House, rare at 

 Beeston and Oxton. 



H. fulva. Not uncommon at the foot of a hill at Thrumpton, rare 

 at Highfield House, Oxton, and Stanton-on-the-Wolds. 



H. hispida. Common at Nottingham Castle, Beeston, Bulwell, Saw- 

 ley, Oxton, Highfield House, Thrumpton, Stanton-on-the-Wolds, &c. 



H. concinna. Tolerably abundant at Highfield House, and found 

 at Stanton-on-the-Wolds. 



H. depilata. Found in small numbers at Stanton-on-the-Wolds. 



H. sericea. Rare at Bulwell, Oxton, and Stanton-on-the-Wolds. 



H. virgata. Rare at Stanton-on-the-Wolds and at Highfield House. 



H. ericetorum. Abundant at Stanton-on-the-Wolds. 



H. rotundata. Very common at Highfield House and Nottingham 

 Castle, and found at Bulwell. 



