PLATE CS^K. 



1. 2. 3'. Helix cellaria . 4*. 7. H. ni-rida , 



5. 6. H. alliana . 8. !). 10 H lutidnla . 



" £. Soiveriy. Jiirtrexv. 



Zondon. Published by ^^kn Van Voorsl. /6'.60. 



