2250
Author
Franklin, J. Benjamin
Author
Subramanian, K. A.
Author
Fernando, S. Antony
Author
Krishnan, K. S.
text
Zootaxa
2009
2009-10-08
2250
1
63
journal article
11755334
29.
Conus inscriptus
Reeve, 1843
(Figure 30)
Conus inscriptus
Reeve, 1843
: pl. 29, no. 164 (
three syntypes
, BMNH (34.5 x 18; 32.5 x 17; 29 x 14.5 mm); locality unknown).
Conus kaetii
Sowerby II, 1858: 34
, no. 298, pl. 20, fig. 479 (
two syntypes
, BMNH (48.5 x
22 mm
; 46 x
22 mm
); "
Seychelles
").
Conus planiliratus
Sowerby III, 1870: 255
, pl. 22, fig. 1 (
type
, BMNH (41 x
20 mm
) (
Röckel
et al.
1995
); locality unknown).
Conus tegulatus
Sowerby III, 1870: 256
, pl. 22, fig. 12 (
holotype
, BMNH (19 x
9 mm
); "
China
Seas
").
Conus cuneiformis
E.A.
Smith
, 1877: 202–204
(
lectotype
, BMNH (25 x
14 mm
) (
Coomans
et al.
1985a
); locality unknown).
Conus adenensis
E. A.
Smith
, 1892: 401–402
, pl. 33, fig. 1 (
lectotype
, BMNH (48 x 21.5 mm) (
Coomans
et al.
1979a
); "Aden").
Conus maculospira
Pilsbry, 1921: 329–330
.
Conus cavailloni
Fenaux, 1942: 4
, fig. 12 ("
Bermudes
").
Conus keatiformis
Shikama, 1977: 19–20
, pl. 4, figs. 1a, b, pl. 5, fig. 7 (
holotype
, KPM (46 x
24 mm
) (
Röckel
et al.
1995
); "East
China
Sea").
Conus maculospira bangladeshianus
da
Motta, 1985c: 6–7
, pl. 1, figs. 5a, b, 6a, b (
holotype
, MHNG (43 x
23 mm
) (
Röckel
et al.
1995
); "off the coast of
Bangladesh
in the Bay of Bengal, Indian Ocean").
Material examined:
MBMCS 129
,
315 specimens
, SL
23–68 mm
; SW
11–33 mm
.
Description.
Shell medium to moderately large, light in weight with a low gloss or dull surface. Body whorl ventricosely conical to conical, outline convex posteriorly, usually straight below tapering to a very narrow and long base. Shoulder angulate to sub-angulate. Spire of low to moderate height; outline concave to straight, most frequently straight and sometimes with stepped whorls in smaller specimens. Body whorl with widely spaced, weak to pronounced spiral grooves separated by ribbons on basal third to two thirds; anteriorly, grooves are wide, often containing spiral threads or fine ribs.
Ground colour pale brown to dark brown, sometime rusty brown. Body whorl with spiral rows of orange to dark brown dots, spots, bars or axial streaks fusing into axial flames and blotches and forming interrupted spiral bands below shoulder and within adapical and abapical thirds. Sub-shoulder band usually less prominent than anterior bands. Aperture white. Periostracum brown, thin, translucent and smooth; sometimes thicker and coarse. Almost completely white shells of
C. inscriptus
from
India
were described as
C. i.
cuneiformis
(
Röckel
et al.
1995
)
.
Distribution.
The earliest report of
C. inscriptus
(as ‘
C. planiliratus
Sowerby’) was by
Smith (1894)
off
Calicut
.
Melvill & Standen (1901)
reported this species (also as ‘
C. planiliratus
’) from
Bombay
.
Kohn (1978)
reported museum specimens collected from
Gujarat
(at MCZ). Along the east coast, specimens are reported from Ratnagiri (at MCZ),
Tranquebar
(at ZMUC) and off Cape Comorin (at AMNH). Specimens were also obtained off Madras [as communicated by F. B. Steiner to
Kohn (1978)
].
Kohn (1978)
obtained
C. inscriptus
specimens trawled off PortoNovo. All specimens in the above reports were collected at depths of
40–
100 m
.
The specimens described herein were collected by trawling in
15–80 m
at major fish landing centers of the
TamilNadu
Coast
(
Table 6
). Particularly at Palayar and Cuddalore, enormous quantities (approximately more than half a tonne per week) of
C. inscriptus
were landed as by-catch from the fishing-boats that trawl for shrimp (
Penaeus monodon
Fabricius
).
Remarks.
We obtained albino specimens of
C. i.
cuneiformis
from Vembar (Figure 62N). The large quantity of
C. inscriptus
around Palayar and Cuddalore suggest that this species prefers sandy-mud and muddy substrates.
Conus loroisii
and turrid species are always found associated with
C. inscriptus
.