Abstract

Seven species belonging to the gastropod family Volutidae are reported for the first time from Kutch, Gujarat, India. They are Prestrombus aff. Prestrombus rockei Cox, 1931, Indovoluta humberti (d’Archiac and Haime, 1854), Indovoluta multidentata (d’Archiac and Haime, 1854), Involuta daviesi Cox, 1931, Involuta coxi new species, Athleta (Volutocorbis) harnaiensis Cox, 1931, and Lyria cf. Lyria punjabensis Eames, 1952. Indovolutinae new subfamily, constituted of the Paleogene genera Prestrombus Douvillé, 1929, Indovoluta Eames, 1956, Involuta Cox, 1931, and Lyrischapa Aldrich, 1911, and the Cretaceous genus Gosavia Stoliczka, 1865, is proposed. These forms have elaborate development of columellar plaits. All of these genera evolved in the western part of the Indian subcontinent. They, except Lyrischapa, also largely remained restricted to this area. Lyrischapa flourished in the Americas after possibly migrating through the southern margin of the relict Tethys Ocean and crossing the Atlantic Ocean. It is argued that the geographic and temporal restriction of this new subfamily was due to lecithotrophic larval development.

UUID: http://zoobank.org/14bc056f-1d2e-4674-b624-9eb8e856a1f0

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