Shell-bearing Mollusca (Bivalvia and Gastropoda) from submarine caves in Hong Kong Author Lam, Katherine Author Morton, Brian Author Leung, K. F. text Journal of Natural History 2008 2008-03-31 42 9 - 12 927 952 http://dx.doi.org/10.1080/00222930701862674 journal article 10.1080/00222930701862674 1464-5262 5225019 Vulsella vulsella ( Linnaeus, 1758:671 , no. 22) ( Figure 2M ) Description Shell height up to 65 mm , elongate-oval postero-ventrally, weakly convex, no byssus. Single ligament pit large. Shell exterior covered with thick brownish periostracum and irregularly radial riblets. Interior of white nacre. Shell microstrucuture similar to species of Pteriidae . Type locality ‘‘in Indiis’’. Distribution Indo-Pacific. Lives in sponges at depths of 5–20m ( Reid and Porteous 1980 ).