A Field Guide to the Snails of Lord Howe Island

25 View of the southern mountains under partial cloud cover. Image I. Burghardt. 13. Semislug with reduced shell of 3.5-4 whorls 13a. Snail with shell of more than 4 whorls 14. Umbilicus closed 14a. Umbilicus open 15. Shell less than 3 mm in diameter 15a. Shell 3-12 mm in diameter 16. Shell transparent white, apical whorls golden brown, sutures weakly impressed 16a. Shell golden brown, sutures deeply impressed 17. Shell diameter greater than 10 mm 17a. Shell diameter less than 10 mm 18. Shell diameter less than 3 mm 18a. Shell diameter 3.5-13 mm 19. Whorls tightly coiled, shell diameter 6mm 19a. Whorls less tightly coiled, shell diameter 7mm, smelling of garlic Howearion (Helicarionidae) ........................... go to 14 ........................... go to 15 ........................... go to 17 ........................... go to 16 Microcystidae Elasmias (Achatinellidae) Monterissa (Hydrocenidae) Bradybaena (Bradybaenidae) ........................... go to 18 Hawaiia (Pristilomatidae) ........................... go to 19 Zonitoides (Gastrodontidae) Oxychilus (Oxychilidae)