Conus vitius
(Hoerle, 1976)
Conus fusiformis
(Gardner, 1937)
Diagnosis (1):
“Shell small for the genus,
slender, fusiform in outline. Spire elevated, scalariform, between one-third
and one-half the height of the entire shell. Whorls 9 to 9 ½ , including the 3
or 3 ½ all, smooth, laterally
compressed protoconchial turns. First whorl of conch axially costate, the
peripheral keel developing only toward the close of the turn. Later whorls of
spire strongly angulated at the periphery, which falls a little less than
twothirds the distance from the posterior to the anterior suture. Incremental
sculpture vigorous near the posterior suture, especially in the early whorls,
becoming more feeble toward the periphery and absent altogether in front of it.
Sutures distinct, even a little impressed. Shoulder of body whorl sharply
angulated, outlined by the posterior of 20 prominent, subequal rounded spirals
separated by interspaces of slightly greater width upon the earlier portion of
the whorl but becoming more and more narrow toward the anterior canal, where
they are reduced to linear dimensions. Incrementals well developed in the
interspiral sulci. Aperture very narrow but little more than half the total
height. Outer lip broken; the posterior siphonal notch as revealed by the
growth lines only moderately deep. Inner lip smooth, striaght. Anterior canal
narrow, obliquely truncate. The type, which is unique, had suffered injury ,
but the animal has been able to make effective repairs upon its shell.”
(Gardner, 1937)
Dimensions of holotype: height 13,8 mm, diameter 5,4 mm.
Holotype: USNM 349870.
Type locality: USGS 5633 , Yellow River below Oak Grove Bridge, Okaloosa
County, Florida (=TU 91).
Occurrence: Oak Grove Sand, Florida; (?) late lower Miocene.
Figured specimen: USNM 220124; height 11.9 mm,
diameter 4.4 mm; locality TU 91.
Discussion: Gardner's specific name C. fusiformis is preoccupied three times : G .Fischer, 1807; Lamarck, 1810; and Pease,
1861: therefore a new name, C.
vitius, is here proposed.
The holotype of C. vitius remains unique except for one specimen of this small species found in
the Tulane University collections. It too has suffered injury and has been repaired.
Because of the badly broken lip ( vitius, Latin for "fault") a dorsal view is shown (pl. 5, fig. 2). Gardner so adequately described her species that no furt her comment is
required.
|
|
|
Conus vitius (1)
USNM 220124 mm. 11,9 x 4,4 |
Conus fusiformis (2)
USNM 349870 mm. 13,8
x 5,4 |
Bibliografia
Consultata
·
(1) - Hoerle, S. E.,
1976. The
Genus Conus (Mollusca: Gastropoda) from the Alum Bluff Group of
Northwestern Florida. Tulane Studies in Geology and Paleontology, 12 (1 )
·
(2)
- Gardner, J., 1937. The Molluscan Fauna of the Alum Bluff Group of Florida. U.S.
Geological Survey Professional Paper, 142-F
·