Achatinella concavospira
Achatinella concavospira is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Achatinellidae. This species is endemic to Hawaii. References

concav
Endemic molluscs of Hawaii
Critically endangered fauna of the United States
Gastropods described in 1859
Taxonomy articles created by Polbot
ESA endangered species