1822.] occurring in the Environs of Bristol, 379 



23. Turbo carychium. In moss. 

 Auricula minima. Drapernaud. 

 Carychium myosotis. Ferussac. 



Observation.- — Why does M. Cuvier place this shell, whose 

 animal lives in moss, among those inhabiting freshwater? 



24. Helix lapicida. Leighwood. 



25. Hehx planorbis. In ditches. 



26. Hehx vortex. In ditches. 

 Planorbis vortex. Drapernaud. 



27. Hehx spirorbis. In ditches. 



28. Helix contorta. In ditches. 

 Planorbis contortus. Drapernaud. 



29. Helix alba. In ditches. 

 Planorbis hispidus. Drapernaud. 



30. Helix fontana. In ditches. 



31. Helix paludosa. In moss. 



32. Helix ericetorum. Clifton Down. 



33. Helix virgata. In fields. 



Observation. — The abundance of this species in a field at 

 Torkington, a few months ago, occasioned the report, that it had 

 rained snails ! 



34. Hehx caperata. In dry situations. 



35. Helix rufescens. In hedges, &c. 



36. Helix nitens. Under stones in moist places. 



37. Helix alharia (nobis). 



Spec. Char. An umbihcated, depressed, pellucid, shining 

 horn-coloured shell, having no more than four volutions. 



Observation. — This species never arrives to the size of H. 

 nitens, has one volution less, and is found under moss on old 

 trees. Its inhabitant smells strongly of garlick. 



38. Hehx cristallina. MuUer Verm. 



Observation. — Found near the roots of grass, resembling the 

 two former species ; but infinitely smaller. 



39. Helix cantiana. Near hedges. 



40. Hehx hispida. Leighv/ood. 



41. Helix radiata. On old trees. 

 Helix rotundata. Drapernaud. 



42. Helix umbilicata. In dry rocky situations. 



43. Flehx subrufescens (nobis). In woods. 



Spec. Char. A subumbiHcated, very slightly carinated, 

 irregularly striated, slightly raised, diaphanous shell, with five 

 volutions, and a somewhat round lunated aperture. 



Observation. — I have found but few individuals of this new 

 species, which differ from H. rufescens in the shell being thinner, 

 rather corneous, and but very shghtly carinated. From H. his- 

 pida, it differs in being only subumbilicated, and not hispid. 



44. Helix pomatLa. Rare at Stapleton. 



45. Hehx arbustorum. In woods. 



