Omphalotropis quadrasi

Animalia › Mollusca › Gastropoda › Littorinimorpha › Assimineidae

Collected by: Edwin H. Bryan Jr.; Edwin H. Bryan Jr.
Collector number: Bottle 20
Date: April 15, 1936
Locality: Ritidian Point; inland 100 yards
Region: Guam
Coordinates: 13.6511, 144.8616 ± 367 m
Record type: Preservedspecimen

26 Bishop specimens of Omphalotropis quadrasi · collected 1927–1996Species page ›

Where it was collected

Collected the same day

On April 15, 1936, Edwin H. Bryan Jr.; Edwin H. Bryan Jr. also collected 24+ other specimens.

Still here: Omphalotropis quadrasi observed near this locality

This specimen was collected in 1936. Since 2000, iNaturalist observers have recorded 2 research-grade sightings in the wild within 25 km, most recently on 2024-09-17.

2024-09-17

Pagat, Guam

(c) CJ Paulino, some rights reserved (CC BY-NC)

2024-05-10

Anao, Guam

(c) CJ Paulino, some rights reserved (CC BY-NC)

Observations and photos from iNaturalist, shown only when openly licensed.

Cite this specimen

Omphalotropis quadrasi. BPBM 152769. Bernice Pauahi Bishop Museum, Honolulu. Accessed via explore.bishopmuseum.org/specimens/mo/152769.

Record sources

Last harvested October 27, 2026