Conus guppyi (Woodring, 1928)

 

 

Description (1)

 

Conus (Lithoconus) guppyi, new species (Plate 10, Figure 2)

 

Shell moderately small, very slender, spire moderately high, shoulder truncated. Nuclear whorls projecting as a prominent tip. Aperture very narrow. Siphonal notch narrow, shallow. Siphonal fasciole narrow, low.

Outer lip rather strongly retractive as it approaches anal notch. Anal notch moderately deep. Anal fasciole concave, bearing one or two obscure spiral threads. Shoulder forming a broad ridge on spire whorls. Sculpture consisting of narrow very low spiral threads, which on type extend from base to shoulder.

Length 39.6 mm.; diameter 17.8 mm. (holotype).

 

On account of the slender shape, narrow aperture, correspondingly narrow siphonal notch and siphonal fasciole, this species seems rather far removed from the type of Lithoconus and from the preceding three species, though it has the same kind of outer lip and anal fasciole as “yaquensis.” On the early whorls the anal fasciole is flatter. Two small specimens in the National Museum are much less strongly sculptured than the type, as they have obscure spiral threads only at the base. One of these is a specimen in the Guppy collection labeled “Conus haitensis Sowerby,” which is a very different species. Nine specimens of guppyi are in the Duerden collection.

 

C. olssoni Maury (Bull. Am. Paleontology, vol. 5, p. 207, pl. 33, fig. 3, 1917), a species from the Gurabo formation, is very slender and has similar nuclear whorls, but on the early whorls the anal fasciole bulges and on the later whorls it is flat, and the shoulder is more bulging.

 

C. furvoides Gabb (see Pilsbry, Proc. Acad. Nat. Sci. Philadelphia, vol. 73, p. 328, pl. 20, fig. 1, 1922), found only in the Cercado formation, has a narrow ridge at the shoulder and its outer lip is more strongly retractive.

 

Type material.-Holotype (U. S. Nat. Mus. No. 369353).

 

 

 

Conus guppyi (1a)

Holotype USNM 369353

Plate 10 fig. 2

mm. 39,6 x 17,8

 

 

 

 

 

 

Bibliografia Consultata

 

·         (1) - Woodring, W. P., 1928. Miocene mollusks from Bowden, Jamaica, pt. 2

·         (1a) - Miocene mollusks from Bowden, Jamaica, by Wendell Woodring