Southwest Florida Shells with Emphasis on Sanibel & Captiva
José H. Leal
Shell size to 45 mm; shell outline variable: usually elongate when attached to sea whips; rounded when living on rocks or other hard substrates. Sometimes with central ridge and branching ribs. Claw-like projections of these ribs hold onto stems of sea whips. Inner margins with tiny, pimple-like denticles. Color reddish- to dark-brown.