66 LIMN^ADiE. 



We have noticed a small variety, acuta, with the 

 spire elongated and acute, and the suture more dis- 

 tinct and more oblique ; about half an inch in length. 



Hah. Common every where, and in all kinds of 

 localities, though it seems to prefer ponds and ditches 

 of stagnant water. 



L. AumcuLARius. Linnmus. PL VII, fig. 45. 



Shell very much inflated, almost as broad as long ; spire short and 

 acute ; aperture an oblique circular oval, vastly expanded ; outer lip 

 patulous. 



Helix auricu-laria, Linn., ^c. 



This elegant shell may be distinguished from the 

 varieties of pereger, which bear a close resemblance in 

 many respects, by the exceedingly small acute spire, and 

 capacious mouth, which occupies about two-thirds of 

 the area. Is is of a shining horn colour, coarsely 

 wrinkled, and more or less longitudinally striated ; the 

 outer lip is expanded and reflexed, forming a slight 

 umbilical hollow behind. Length an inch, breadth 

 three quarters of an inch. 



var. ACUTUS, has the mouth less capacious and the 

 body much smaller ; spire very similar. 



Animal of an olivaceous yellowish grey, with spots. 



Hah. This shell is found chiefly in the southern and 

 midland counties, and may be considered somewhat 

 local, as it is wanting in many districts. Abundant in 

 many places round London. The recorded localities 

 are Clumber Lakes, Notts, York, Hemsworth dam 

 near Ackworth, &c. It prefers still waters. 



L. BuRNETTi. Alder. PL VII, fig. 40. 



Wrinkled, mouth very ample, folds indistinct ; spire depressed, 

 almost level. 



Gulnaria lacustris, Leach. 



This shell was first detected by Burnett, of New- 

 castle, in the stomach of trout caught in Lock Shene, 

 Dumfriesshire, where it was taken alive. It is closely 

 allied to some of the many varieties of L. pereger. The 



