Pseudohelenoconcha spurca is an extinct species of small air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Endodontidae.
Campolaemus perexilis was a species of very small, air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Vertiginidae, the whorls snails. This species was endemic to the island of Saint Helena; it is now extinct.
Chilonopsis blofeldi was a species of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Achatinidae. This species was endemic to Saint Helena. It is now extinct.
Chilonopsis is an extinct genus of air-breathing land snails, terrestrial pulmonate gastropod molluscs in the family Achatinidae. All species were found on Saint Helena
†Chilonopsis exulatus was a species of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Achatinidae. This species was endemic to Saint Helena. It is now extinct.
†Chilonopsis melanoides was a species of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Achatinidae. This species was endemic to Saint Helena. It is now extinct.
Chilonopsis nonpareil is an extinct species of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Achatinidae. This species was endemic to Saint Helena. It is now extinct and was last seen in 1870.
Chilonopsis subplicatus was a species of air-breathing land snails, terrestrial pulmonate gastropod molluscs in the family Achatinidae. This species was endemic to Saint Helena. It is now extinct.
Chilonopsis subtruncatus was a species of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Achatinidae.
Chilonopsis turtoni was a species of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Achatinidae. This species was endemic to Saint Helena. It is now extinct.
†Helenoconcha leptalea is an extinct species of small air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Charopidae.
†Helenoconcha polyodon was a species of small air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Charopidae.
†Helenoconcha pseustes was a species of small air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Charopidae.
†Helenoconcha sexdentata was a species of small air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Charopidae.
†Helenodiscus bilamellata was a species of small air-breathing land snail, terrestrial pulmonate gastropod mollusks in the family Charopidae.
†Helenodiscus vernoni was a species of small air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Charopidae.
Nesopupa turtoni is a species of very small, air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Vertiginidae, the whorl snails. This species is Endemic to Saint Helena island; it was thought to be extinct until its rediscovery in 2003.
†Pupilla obliquicosta is an extinct species of minute, air-breathing land snail, a terrestrial pulmonate gastropod mollusk or micromollusk in the family Pupillidae. This species was endemic to Saint Helena but is now extinct due to human activities.
