A new genus Lamellolucina is proposed for a group of Indo-West Pacific lucinid bivalves with prominent commarginal lamellae often confused under the name Lucina dentifera Jonas. The genus comprises seven species, four of these are newly described from the Indo-Pacific and a single species L. reyrei Nicklès is known from West Africa. The type species L. pilbara n.sp. appears to be endemic to northwestern Australia. L. gemma Reeve is recorded from China, Philippines and Queensland, L. jawa n.sp. is described from Madura, Indonesia. L. trisulcata n.sp. ranges from southern India to Indonesia and L. oliveri n.sp. is known from Arabian Sea and Gulf of Oman. L. dentifera appears to be restricted to the Red Sea and Gulf of Aden.