Notice of recent additions to the marine fauna of the eastern coast of North America

AMONG the many interesting additions recentl.Y made to the American marine fauna, are two handsome undescribed species of "sea-feathers" (Pennatulacem) and three fine new species of hychoids, belonging to the family Plumularidm, of which only three species have previously been known to inhabit our northern coast. Those now added appear to belong to the genus Cladocarpu8, recently established by Allman, for several deep-water forms, from the coasts of Europe and the Gulf of :Mexico. 'l'wo very interesting Cephalopods h:lVe also been recently added to our fauna.