Conus
perlepidus (Pilsbry & Johnson, 1917)
Conus planiliratus Sby., Gabb. Trans. Amer. Philos. Soc., XV, 1873, p. 230.
Not of Sowerby.
Description (2)
The shell is rather slender, with somewhat
concavely conic spire of about 12 whorls, which are flat, marked with raised,
arcuate striae, and have an angle projecting very little above the suture. Last
whorl is rather actuely angular, the sides nearly straight below the angle,
with sculpture of about 22 spiral furrows half as wide as the flat intervals;
the furrows being cancellated by raised axial threads. The posterior sinus of
the aperture is deep. Aperture of about equal width throughout.
Length 44, diam. 18, length of aperture 38
mm.
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Gabb referred the specimens of this
species to C. planiliratus, but Sowerby's phrase "Testa turbinata,
crassa" could hardly have been applied to such "a long, narrow
species" as this.
Gabb refers, also, to Guppy's figure in
Quarterly Journal of the Geological Society, XXII, PI. 16, fig. 7, which agrees
well with Sowerby's brief diagnosis of C. planiliratus, but not with the
present species.
The type and five other specimens are No.
2569, A. N. S. P. In small specimens, 22 mm. long, the spiral grooves are equal
in width to the flat intervals.
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Conus
planiliratus ()
Guppy, Q. J. 1873
= Conus perlepidus (1) |
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Conus perlepidusANSP
2569 mm. 44 Plate XX, fig. 5 (1) Dr. Alejandra Martinez-Melo Collection Manager of Invertebrate Paleontology Academy of Natural Sciences, Drexel University 1900 Benjamin Franklin Pkwy Philadelphia, PA 19103 USA am5258@drexel.edu Image credit:
Daouda Njie |
Conus perlepidusANSP
2569 mm. 44 Plate XX, fig. 5 (1) |
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Taxa described by Pilsbry & Johnson, 1917 were
later figured by Pilsbry, 1922 (often cited as 1921). In their species descriptions, Pilsbry
& Johnson included measurements for at least one specimen from each lot. The measured specimen is their
holotype. With one or two exceptions,
where measurements are given for more than one specimen, they indicated their
holotype by '(type)' after the measurements.
Sometimes it was clear from the verbal description ('type and five
smaller valves') which is the holotype.
Where it is unclear from measurements which specimen is the holotype
but the figured specimen is labeled 'type' in Pilsbry, 1922, this specimen
has been split as a lectotype. Where
there is only a drawing and it is impossible to differentiate a type from a
suite, the whole lot is left together as 'syntype'. Lot contains note: 'not
planiliratus? See Conus
cruzianus Dall (46.0 p. 166) Wagner ins. Vol
111 pl. 5.' Credit:
Dr. Alejandra Martinez-Melo |
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Bibliografia Consultata
·
(1)
- Pilsbry, H. A., and Johnson, 1917. Oligocene Fossils from the Neighborhood of
Cartegena, Columbia, with Notes on Some Haitian Species. Proceedings of
the Academy of Natural Sciences of Philadelphia, 69
·
(2) - New
Mollusca of the Santo Domingan Oligocene Author(s): H. A. Pilsbry and C. W.
Johnson Source: Proceedings of the Academy of Natural Sciences of Philadelphia,
Vol. 69, No. 2