PLATE XXIII. 



Helix. Snails with thickened lips. 

 Fig. 



1. H. pisana, Midler. — H. zonaria, cingenda, rhodostoma, strigata, 



albella.—CoxxiwvW, S. Wales, Dublin, C. S. and N. Eu. 



2. H. aspersa, Miiller. — H. grisea, hortensis, variegata, vulgaris, etc. 



— Common in all our gardens and hedges. 



3. H. virgata, Cosla. — H. variabilis, ericetorum, zonaria, etc. — In 



sandy and chalky places, C. More compressed than No. 1. 



4. H. cantiana, Mont. — H. pallida, etc. — South and west Engl., C. 



5. H. ericetorum, Miiller. — H. itala, striata, albella, erica, nivea, 



caspita, etc. — Chalky and sandy places, C. Depressed, delicately 

 banded ; large umbilicus. 



6. H. rufescens, Pennant. — H. rufina, montana, calata, clandestina, 



etc. — Most common in southern, chalky and limestone districts. 

 Depressed, striated; whorls slightly angular. Generally lighter 

 than our figure, sometimes nearly white. 



7. H. lapicida, Linn. — H. acuta, affinis, Carocolla I. — Chalk and 



limestone districts, C. S. and N. Eu. Sharply angular. 



8. 9. H. hispida, Linn. — H. rufescens, sericea, concinna (var. without 



hairs), etc., plebeia. — All parts of Brit., C. More depressed 

 than H. sericea, with larger umbilicus. 



10. H. fusca, Mont. — H. subrufescens. — Brit, gen., Mc. 



11. H. sericea, Drap. — H. hispida, globularis, granulata, etc. — Gra- 



nulated, hairy. Mouth wider than 8. Small umbilicus. 



12. H. obvoluta, Miiller. — H. trigonoplwra, etc. — Ditcham Wood, 



Hampshire. In Moss at roots of trees, Rr. 



13. H. fulva, Miiller. — H. terrestris, trochiformis, nitidula, etc. — 



Pretty general and common. Conical, minute, transparent. 



14. H. pomatia, Linn. — Southern chalky districts, S. Eu., C. 



15. H. caperata, Mont. — H. striata, H. crenulala, etc. — Chalk-pits, 



etc., C. 



16. H. carthusianAj Miiller. — H. nitida, cart/iusianella, rujilabris, etc. 



— Chalk-districts of Surrey and Kent, C. 



17. 18. H. nemoralis, Linn. — H. hortensis, fasciata,kybrida, etc. — Cc. 



A peculiar flattening near the base of aperture. 



19. H. arbustorum, Linn. — Common and general. Brown-marbled. 



Edge of aperture different from 17, 18. 



20, 21. H. rotundata. — H. radiata, Turtoni, etc. — Common and 



general. 

 22, 23. H. pulchella, Miiller. — H.costata,paludosa,crenella,?ninuta, 



etc. — Common and general under stones, etc. 

 24. H. revelata, Ferussac.~ — Cornwall, Devon, Torquay, Guernsey. 



Rare. A transparent, greenish, hairy shell. 



