Conus laqua (Mansfield, 1935)

Shell small, subbiconic, rather stout and consisting of 10 whorls in all. Spire turrited, uniformly conic and constituting about one-third of shell length. Spire whorls medially depressed and marked with obscure spiral lines and strong curved growth lines. Front and back of body whorl similarly sculptured with 21 strong, nearly smooth, concentric bands with slightly narrower interspaces. The interspaces are crossed by fine axial threadlets⁽¹⁾.

The holotype (U. S. N. M. Cat. No. 373118) measures: Length, . 24 mm.; greatest diameter, 10.8 mm. Length of spire, 9 mm.

Conus multiliratus gaza Johnson and Pilsbry from the middle Miocene of Dominican Republic, Panama and Colombia, S. A., shows some relationship to C. laqua n. sp. but differs from it in having a more tapering body whorl. Conus harveyensis Mansfield, an upper Miocene species, though closely related, has a relatively narrower shell and wider spiral bands ⁽¹⁾.

The new species appears to be a precursor of C. pygmaeus Reeve, a living species, differing mainly in having wider-spaced concentric bands ⁽¹⁾.

Occurrence: Upper middle Miocene, Area zone. Station 12046, Vaughan Creek, upper locality, Walton County (type locality). Station 12044, Bell place, upper locality, Walton County; Station 12045, Bell place, lower locality. Rare at all localities.

Conus laqua ⁽¹⁾

Plate 1 fig. 6

mm. 24 x 10,8

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Bibliografia Consultata

• (1) - Mansfield (1935) “New Miocene Gastropods and Scaphopods from Alaqua Creek Valley, Florida”