Notodiaphana fragilis is a species of marine snail, gastropod mollusk in the clade Architectibranchia. Notodiaphana fragilis is the only species in the genus Notodiaphana. Genus Notodiaphana is the only genus in the family Notodiaphanidae. It has been classified in the superfamily Diaphanoidea. Shell description The little-known species have small, flimsy, almost globular shells, known as paper bubble shells. The shell is minute, thin, fragile, colorless to translucent, and usually less than 5 mm in size. The overall shape is ovate, pear-shaped, and bulbous. There is a sunken apex. The shells resemble those of the genus Haminoea. Distribution The distribution of Notodiaphana fragilis includes the Indian Ocean. Ecology This species occur in the sublittoral to abyssal zones. References Further reading Bois-Reymond Marcus, E. D. (1976). "A taxonomic survey of the genus Toledonia Dall, 1902 (Opistobranchia, Diaphanidae)". Zoologica Scripta 5: 25-33 Gastropods described in 1877