45 



60 to 80 eggs, which are glued to stoues or aquatic 

 plants. 



It is an inhabitant of canals, ponds, brooks, rivers, 

 and ditches, preferring, according to Professor Forbes, 

 peaty situations. 



Our localities are: — A brook at Lenton, another 

 near Beestou Railway Station, the Musco-sic dyke 

 (throughout the greater part of its length), the Trent 

 at Beeston, the river Leen at Bulwell, and a sheet of 

 water at Radford Grove. In all these localities it is 

 abundant, with the exception of the Trent. That 

 variety of this shell which has been called V. depressa 

 has been noticed sparingly amongst others in our 

 localities, and Mr. Jefferies, of Swansea, records Clum- 

 ber Lake as another. 



Professor Forbes says the variety, V. depressa, is 

 abundant in the curraghs of the Isle of Man, and Mr. 

 Humphreys near Dublin. 



Valvata piscinalis, although a common shell, and 

 generally distributed throughout Great Britain, is 

 rather rare in some localities. Amongst the many 

 recorded places where it is found may be enumerated — 

 the canal at Kendal (Gough), the Brigsteer Moss, in 

 Westmoreland (Gough), Lancashire (Kenyon), near 

 London (Grey), Kent>nd Dorset (Montagu), Bristol 

 and Wiltshire (Miller), Essex (Sheppard), Suffolk 

 (Paget), Norfolk (Bloxara), Newcastle (Alder), and 

 Darlington, near Durham (Graham). In Ireland, it is 

 found around Dublin (Brown), King's County (Brown), 

 and Finnoo, county Tipperary (Waller). 



On the Continent, it is an inhabitant of the greater 

 part of Europe (Forbes), of Germany (Pfeiffer), of 

 Sweden (Nilson), of France (Grey), and of Sicily 

 (Fhillippi). 



As a fossil it is found in the later fresh-water ler- 

 tiaries (Forbes), 



