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
23.
Conus figulinus
Linnaeus, 1758
(Figure 24)
Conus figulinus
Linnaeus, 1758: 715
, no. 267 (
lectotype
, LSL (65 x
42 mm
) (
Kohn 1963
); locality unknown).
Cucullus buxeus
Röding, 1798: 42
, no. 530 (representation of
lectotype
,
Martini 1773
: pl. 59, fig. 656 (57 x
37 mm
) (Kohn 1975); "Amboine").
Conus figulinus violascens
Barros
e
Cunha
, 1933: 37–38
(
two syntypes
, MZUC (SL 48 and
42 mm
) (
Röckel
et al.
1995
); locality unknown).
Material examined:
MBMCS 123
,
142 specimens
, SL
22–84 mm
; SW
14–46 mm
.
Description.
Shell medium sized to large, solid to heavy with high gloss. Body whorl ventricosely conical, posteriorly very convex with a narrow base, anterior third to quarter of body whorl with variable spiral ridges, these sometimes heavy or weak; rest of body whorl smooth, except for numerous axial threads and growth marks; shoulder rounded, flat or slightly convex above; spire very low or flat, early whorls form a small sharply pointed cone in the middle. Aperture wide, slightly flaring anteriorly; outer lip thick.
Body whorl grey to dark tan, usually densely covered with narrow uninterrupted dark brown spiral lines; top of shoulder and spire usually dark brown, contrasting with body whorl colouration.
Interior
of aperture bluish white to pale bluish. Siphon and foot black.
Distribution.
Mitchell (1867)
and
Frauenfeld (1869)
first reported
C. figulinus
from Madras. Subsequent records along the east coast are from Tuticorin (
Thurston 1895
), Pamban (
Sundaram 1969
) and Rameswaram (
Röckel
et al.
1995
). Along the west coast,
Subrahmanyam
et al.
(1952)
recorded specimens from
Bombay
. Museum specimens were reported by
Kohn (1978)
from
Bombay
(at ANSP), Travancore (at ZMS) and Malabar (at NMW).
The specimens described herein were collected by trawling in
5–50 m
.
This
species was widely distributed in almost all stations of the northern region and found abundant in the
Gulf
of
Mannar
(
Table 6
)
.
Remarks.
Conus figulinus
is often mistaken for
C. loroisii
because of its similar shape, especially if the periostracum is intact. However, the absence of distinct brown spiral lines on the last whorl of
C. loroisii
distinguishes it from
C. figulinus
. In addition,
C
.
loroisii
and
C. loroisii
f.
insignis
do have similar shape and differ only in the colour pattern. The body whorl of
C. loroisii
f.
insignis
has more closely spaced blackish brown spiral lines from base to shoulder than
C
.
figulinus
. There are several views in assigning
C. loroisii
,
C. figulinus
and form
insignis
to a valid species / subspecies level (
Walls 1979
;
Coomans
et al.
1979b
;
Tucker 1984
;
Richard 1990
;
Röckel
et al.
1995
).
Richard (1990)
assigned form
insignis
to
C. loroisii
and declared
C. loroisii
as a valid species. Recently,
Röckel
et al.
(1995)
have clearly analysed earlier literatures as well the morphological charaters and defined that
C. figulinus
and
C. loroisii
as distinct species. Also they have assigned form
insignis
to
C. loroisii
.
We agree and have followed
Röckel
et al.
(1995)
.
Conus figulinus
is often landed with
C. betulinus
,
C. loroisii
and other gastropods such as turrids,
Xancus pyrum
Linnaeus
,
Hemifusus pugilinus
Born
, and
Babylonia spirata
Linnaeus.
Previous records suggested
C. figulinus
is a shallow water species, but we observed this species to occur in both deep and shallow fine sand and algal bottoms. A large population of this species was observed around the sea grass bottoms of Oodai (Mandapam) indicating a specific preference.
Living
C. figulinus
,
C. monile
and
C. loroisii
are found with sea anemones on their shell surface (Figure 62J, K & L).