Annotated catalogue of the types of Triphoridae (Mollusca, Gastropoda) in the Natural History Museum of the United Kingdom, London
Author
Albano, Paolo G.
https://orcid.org/0000-0001-9876-1024
Department of Palaeontology, University of Vienna, Althanstrasse 14, A- 1090 Vienna, Austria
pgalbano@gmail.com
Author
Bakker, Piet A. J.
https://orcid.org/0000-0003-4683-2083
Naturalis Biodiversity Center, Darwinweg 2, 2333 CR Leiden, The Netherlands
Author
Sabelli, Bruno
Department of Biological, Geological and Environmental Sciences, University of Bologna, via Selmi 3, 40126 Bologna, Italy
text
Zoosystematics and Evolution
2019
2019-04-22
95
1
161
308
http://dx.doi.org/10.3897/zse.95.32803
journal article
http://dx.doi.org/10.3897/zse.95.32803
1860-0743-1-161
0F66F482B7AB4A5CA61168EC01012D41
643B8504FF9AFFF3FF97FF9FFFF1FF82
2654003
Trifora fuscomaculata E.A. Smith, 1904
Figure 87
Trifora fuscomaculata
E.A.
Smith 1904
: 37, pl. 3, figs 7, 8.
Type
locality.
"Port Alfred, Cape Colony" (Cape of Good Hope, South Africa).
Type
material.
Lectotype
:
NHMUK
1903.12.19.1078, here designated.
Paralectotype
:
NHMUK
1903.12.19.1079,
1 specimen
, Port Alfred,
South Africa
.
Additional material.
Triphora
sp. (
T. fuscomaculata
var. of
E.A. Smith
, but not conspecific),
NHMUK
1903.12.19.1080-1083,
4 specimens
,
Port Alfred
,
South Africa
.
Original description.
Testa elongata, gracilis, alba, fusco irregulariter maculata; anfractus circiter 20 planiusculi, lente accrescentes, quadricingulati, cingulis tuberculatis, duobus medianis aliis majoribus, longitudinaliter sulcati, subcancellati, ultimus infra peripheriam cingulis tribus haud granosis ornatus; apertura rotunde quadrata, antice breviter oblique canaliculata; columella supra arcuata, callo tenui induta.
Longit. 17 millim., diam. 3.5.
Var. (Pl. iii, fig. 8) Testa angustior, minor, cingulis tribus, superioribus aequalibus, distinctius et confertim tuberculatis.
Longit. 15 millim., diam. 3
The typical form is more distinctly blotched with brown than the variety.
Translation of the Latin text.
Elongated shell, slender, white, with irregular brown spots; about 20 nearly flat whorls, growing slowly, with four tuberculated cords, the two in the middle larger than others, longitudinally grooved, subcancellated, the last with three granulated cords under its periphery; aperture subquadrate, anteriorly with a very short oblique sinus; columella superiorly arched covered by a thin callus.
Height
17 mm
, diameter
3.5 mm
.
Variety in pl. iii, fig. 8, shell more slender, smaller, with three cords. The uppermost of the same size, clearly tightly tuberculated.
Diagnosis.
Lectotype
14.4 mm
high. Shell conical with flat sides and obsolete sutures. The
lectotype
lacks the apical part. The remaining teleoconch has 12 whorls bearing four thin spiral cords with faint tubercles at the intersection with faint prosocline axial ribs. Numerous fine spiral striae are visible in the wide interspaces. Peristome badly damaged. Periphery angulated at the base, which bears four additional weakly sculptured spiral cords. Siphonal canal damaged but apparently short. Protoconch missing. Teleoconch white with orange blotches.
Remarks.
In the box of this lot there is a capsule with two specimens of
T. fuscomaculata
s.s. and a second capsule with four specimens of a variety that E.A. Smith cited but not fully described in his work (1904). These four shells (Fig.
87K-N
) have well-defined tubercles and an impressed suture which qualify them as a distinct species. Therefore, we have designated a
lectotype
which closely matches the original figure to stabilize the nomenclature.
Figure 87.
Trifora fuscomaculata
E.A. Smith, 1904.
A
Original figure.
B-D, F, G
Lectotype
NHMUK
1903.12.19.1078, Port Alfred, South Africa: front (
B
), side (
C
), back (
D
), aperture (
F
), microsculpture (
G
).
E
Original label.
H-J
Paralectotype
,
NHMUK
1903.12.19.1079, Port Alfred, South Africa: front (
H
), side (
I
), back (
J
).
K-N
Triphora
sp. (
Triphora fuscomaculata
var., sensu E.A.
Smith 1904
),
NHMUK
1903.12.19.1080-1083, Port Alfred, South Africa. Scale bars:
B-D, H-N
:
2 mm
;
F
:
0.2 mm
;
G
:
0.1 mm
.