149 



howcFer, that the Limnceus Burnetii may have been 

 mistaken for it, for this latter Darned species has only 

 recently been discovered. 



The animal has marked characters to distinguish it 

 from the others of the Limn»i. It is provided with 

 large mantle lobes which when expanded corer the 

 whole of the exterior of the shell. It is moreover, so 

 very slimy as to be held with difficulty. The colour is 

 sulphury green speckled with paler spots. 



Inhabits stagnant ditches and still water amongst 

 algoB, a scarce shell, yet periodically abundant in some 

 localities. It deposits from 30 To 40 eggs at one time. 

 Described by Montagu in 1803. 



In this neighbourhood it has only been found in one 

 locality, a still sheet of water near the Trent, above the 

 Beeston R^elands, where it is occasionally plentiful, 

 twenty or thirty specimens having been taken in one 

 day, yet it is frequently difficult to discover a single 

 spfcimen in a wbole mornings search. 



The following are the very few recorded localities of 

 this shell: — Reading (Montagu), Eton and Deal (Good- 

 all), Stanmore, Middlesex (Sowerby), Oxford (J. S« 

 Miller), Norwich formerly plentiful now rare (Bridg- 

 man), Whilllesea Mere (Stephens), Bala Lake in North 

 Wales (Gibbs), Scarborough (Beau), Windermere Lake 

 in one place ( vVinstauley), Scotland (Laskey), Ireland 

 (Brown), Sweden (Niison), Syria (Grey). 



Specimens sent by Mr. Damon, Mr. Jefferys and Mr. 

 Fletcher did not differ from our examples. 



We are deficient of two members of this family : viz. 



Limnaus Burnetti, a rare and newly discovered species 

 by Mr. Burnett in Loch ShemDumfrieshire, since found 

 in Breconshire. 



LimrKBUS Involutus. (The Amphipeplea involuta of 

 Grey) very rare. Discovered by Mr. Harvey in a small 



