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Oliva (Zo logy olive a genus)

in zoölogy, olive; a genus of Buccinidæ. Shell cylindrical, polished; spire very short, suture channeled; ap- OLIVE erture long, narrow, notched in front; columella callous, striated obliquely; bodywhorl furrowed near base. No operculum in the typical species, O. porphyria. Large foot and mantle lobes; eyes near tips of tentacles. Known species 120, from subtropical coasts of America, West We Africa, India, ia, China, and the Pacific. In paleontology, 20 fossil species, commencing in the Eocene Tertiary.