Carelia bicolor

Occurrence evidence

Bishop Museum checklist entries explicitly report Kauai.

Names and classification

Scientific name

Carelia bicolor

Family

Achatinellidae

Order

Stylommatophora

Kauaʻi occurrence and status

Kauaʻi occurrence

extinct

Origin

Endemic

Conservation status

Listed extinct (Bishop Museum, 1997; last seen unknown)

Evidence date

2026-10-01

Evidence limits

Current survival, last-seen date, modern survey coverage and precise sites for broadly labelled collections remain unresolved.

Habitat and ecology

Habitats

Land

Process and seasonal context

Seasonal description

Historical Kauaʻi land snail in Amastridae, documented from northern coastal valleys and trails. The plate reconstructs the adult Hanakapiai shell in Cooke 1931 plate IV figure 2. Listed extinct in Bishop Museum’s dated 1997 assessment, with last-seen date unknown.

Sources and further reading

• Cooke 1931 — species account pp. 37–42; adult Hanakapiai shell plate IV fig. 2
• MolluscaBase / WoRMS — accepted identity in Amastridae
• Bishop Museum extinction list — historical assessment revised 1997