106 On the Land and Fresh Water Mollusca 



Draparnaldi, I have compared them carefully with specimens of He- 

 licolimax Audebardi, Fer. collected on the continent, and have come 

 to the conclusion that they are not of that species. I am afraid that 

 V. Draparnaldi can only be classed as a variety of V. pellucida, 

 (Helicolimax pellucidus, Fer.) Mr Jeffreys now considers his V. 

 Diaphana to be also a var. of the same. V. Dillwynii appears to be 

 something different, but being founded upon a single dead specimen, 

 it is to be hoped that Mr Jeffreys may be able to obtain additional 

 specimens, and in a living state, in order fully to establish it. 



Gen. 5. Succinea, Draparnaud. 



1. Amphibia, Drap. 



2. Gracilis, Alder. 

 S. oblonga, Turt. 



It may require a further investigation to decide whether or not 

 this be really distinct from the foregoing. I have found them plen- 

 tifully within 100 yards of each other, each retaining its characte- 

 ristic marks in the colour of the animal and shape of the shell, and 

 unmixed with the other sort. Some foreign species of this difficult 

 genus, quite as nearly allied as this to S. Amphibia, are neverthe- 

 less considered to be distinct. 



3. Oblonga, Drap. 



Besides the locality mentioned by Mr Jeffreys, who was the first 

 to introduce this desirable species into the British list, it has been 

 found at Bathgate near Glasgow. Specimens obtained from that 

 place were sent me by Mr Kenyon of Preston a few years ago. 



Gen. 6. Helix, Linnaeus, Lamarck. 



1. Pomalia, Linn. 



2. Arbustorum, Linn. 

 3c Aspersa, Mull. 



4. Nemoralis, Linn. 



5. Horiensis, Linn. 



var. H. hibrida, Leach. 



6. Limbata, Drap. 



Found in the neighbourhood of London by Mr G. B. Sowerby, 

 from whom I have specimens. 



7. Carthusiana, Drap. 



H. pallida, Jeff. 



8. Carthusianella, Drap. 



H. rufilabris, Jeff. 

 The var. a of Mr Jeffreys, which he makes synonymous with H. 

 Olivieri, Fer., M. de Ferussac considered to be erroneously referred 

 to that species. Both vary very much in size. 



