BULLIDAE
dificilis, Bulla Habe, 1950
vernicosa, Bulla Gould, 1859
References
Cernohorsky, Walter O. 1972. Marine Shells of the Pacific. Vol II. p. 206-207.
Links
- Emmanuel Guillot de Suduiraut's Eurasia Shells
- Hardy's Internet Guide to Marine Gastropods
- Bill Rudman's Sea Slug Forum