PLATE XXIII. 



Helix. Snails with thickened lips. 



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

 a^i^fe.— Cornwall, S. Wales, Dublin, C. S. and N. Eu. 



2. H. ASPERSA, Midler.— E. grisea, hortensis, vanegata, vulgaris, etc. 

 — Common in all our gardens and hedges. 



3 H. viRGATA, Costa. — H. variabilis, ericetorum, zonana, etc.— in 



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



4 H. CANTIANA, Mont.—E. pallida, etc.— South and west Lngl., C. 



5 H ERiCETORUii, Midler.— H. itala, striata, alhella, erica, mvea, 



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

 banded; large umbilicus. 



6 H. RDFESCENS, Pennant.— H. rufina, montana, cmlata, clandestma, 



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

 Depressed, striated ; whorls slightly angular. GeneraUy hghter 

 than our figure, sometimes nearly white. 



7 H. LAPiciDA, Linn.—H. acuta, affinis, Carocolla /.— Lhaik and 



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



8 9 H. HispiDA, Linn.—E. rufescens, sericea, concmna (var. without 

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



than H. sericea, with larger umbilicus. 



10. H. FDSCA, Mont.—R. submfescens.-Bvii. gen., Mc. 



11 H. SERICEA, Brap.—H. liispida, globularis, gramdata, etc.— Gra- 

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



12. H. OBVOLUTA, Midler.— H. trigomphora, etc.— Ditcham Wood, 



Hampshire. In Moss at roots of trees, Er. 



13. H. FDLVA, Jf«//er. — ^. terrestris, trochiformis, nitidula, etc.— 



Pretty general and common. Conical, minute, transparent. 



14. H. poiiATiA, i;i««.— Southern chalky districts, S. Eu., C. 



15. H. CAPERATA, Mont.—H. striata, H. crenulata, etc.— Ohalk-pits, 



16. H. CARTHUSiANA, Miiller.—H. nitida, carthusimella, rufilabris, etc. 



—Chalk-districts of Surrey and Kent, C. 



17. 18. H. NEMORALis, Limi.—H. hortensis, fasciata,hybTida, etc.— Co. 



A peculiar flattening near the base of aperture. 



19. H. ARBUSTORUM, iJ«M.— Common and general. Brown-marbled. 



Edge of aperture different from 17,18. 



20, 21. H. EOTUNDATA. — ^. radiata, Tiirtoni, etc. — Common and 



22, 23^ H. PULCHELLA, Midler.— H. costata, paliidosa, crenella, minuia, 



etc. — Common and general under stones, etc. 

 24. H. REVELATA, i%-;mac. — Cornwall, Devon, Torquay, Guernsey. 



Rare. A transparent, greenish, hairy shell. 



