The Family Caecidae has been placed near the Vermetidae in the superfamily Cerithiacea since Clark published his views in 1855. Close examination of the animals shows the caecids to have a close relationship to the superfamily Rissoacea. Animals of the Vitrinellidae were most similar
to the Caecidae, and the shells of the Ctiloceratidae showed affinity to both the Caecidae and the Vitrinellidae. No close relationship between the Caecidae and Vermetidae or other Cerithiacea could be demonstrated, and both the Caecidae and Ctiloceratidae are transferred from the Cerithiacea
to the Rissoacea.
The Bulletin of Marine Science is dedicated to the dissemination of high quality research from the world's oceans. All aspects of marine science are treated by the Bulletin of Marine Science, including papers in marine biology, biological oceanography, fisheries, marine affairs, applied marine physics, marine geology and geophysics, marine and atmospheric chemistry, and meteorology and physical oceanography.