148 



Kent, Dorsetshire, and Wiltshire (Montagu), Bristol 

 (Miller), London (Grey) Essex (Sheppard), Swansea 

 (Jeffreys), Norwich (Bridgman), River Waveney> near 

 Shotford Bridge, Northamptonshire (Bloxam), Stone, 

 Buckinghamshire (Reade), Repton, Derbyshire (Blox- 

 am), Newcastle (Alder), Lytham, Lancashire, rare 

 (The Author). 



Ireland (Brown). Isle of Man (Forbes). 



In other countries it is found in France (Drapar- 

 uaud), in Germany (Pfeiffer), in Sweden (Nilson), and 

 in Corsica (Payradeau). 



In all probability it is an American shell, for the 

 LimnoBa reflexa, L. umhrosa, and L, elodes of Say appear 

 to be varieties of this species. 



LiMNiEus GLUTiNOsus [The Glutinous Mud Shell]. 

 Miiller, 



^ Figure 1 10. 



There are but few British shells so beautiful or so 

 delicate as this species, better known perhaps as the 

 Amphipeplea glutinosa of Nilson, Grey, Brown, &c. 



Semiglobular in form, exceedingly thin, almost mem- 

 branaceous, flexible, pellucid and well polished. Amber 

 coloured. Aperture very capaceous and acutely egg- 

 shaped. There are three and a half convolutions, but 

 the body whorl occupies nearly the whole of the shell* 

 the spire being fery minute. There are faint longitu- 

 dinal w nkles. Devoid of an umbilicus. 



Length half an inch, breadth three eighths of an inch. 

 Specimens taken from Whittlesea Mere have been said 

 to be threequarters of an inch in diameter. It is possible, 



