Dinia truncatula Schepman, 1913: 471
Deep-sea “ cephalaspidean ” heterobranchs (Gastropoda) from the tropical southwest Pacific
Valdés, Ángel
Mémoires du Muséum national d'Histoire naturelle
2008
196
587
792
(Schepman, 1913)
Schepman
1913
[272,704,265,290]
Gastropoda
Retusidae
Relichna
Animalia
Cephalaspidea
175
762
Mollusca
species
truncatula
Dinia truncatulaSchepman, 1913: 471, pl. 32, fig. 5.
TYPE MATERIAL. — One syntype ZMA 3.13.126. TYPE LOCALITY. — Sulu Archipelago, Philippines, 05°43.5’N, 119°40’E, 522 m[ Siboga: stn 095]. MATERIALEXAMINED. — Philippines. The typematerial. 168°42’E, 340 m, 1 dd. New Caledoniaproper. LAGON: stn 830, Secteur de Poindimié, Fiji. MUSORSTOM 10: stn DW1334, Bligh Water, 16°51’S, 20°49’S, 165°19’E, 105-110 m, 42 dd. 178°14’E, 251-257 m, 1 dd (Figs 85 D, E). NorfolkRidge. SMIB5: stn DW90, Banc Aztèque, 22°19’S, DISTRIBUTION. — Originallydescribed from Indonesia(Schepman 1913). Materialherein collected from Fiji, New Caledoniaand the Philippines(Fig. 89), in 110-522 m. DESCRIPTION. — Shell morphology. Length 6 mm, width 3 mm(largest specimen examined). Shell solid, oval, with nearly parallel sides, narrower posteriorly (Fig. 85D). Only 1 whorl visible, except for a small visible portion of the top of the spire. Apex rounded, deeply umbilicate (Fig. 85E), with the aperture lip rising from the right side. The aperture lip forms a rounded wing connected to the columellar margin. Anterior end of the shell rounded. Umbilicus narrow, partially covered by a columellar extension. Aperture long, wide anteriorly, narrowing at about 1/4 of its length. Columellar margin thickened with a conspicuous tooth. Sculpture of a number of inconspicuous spiral grooves covering the entire shell. Colour uniformly dirty white. Anatomy. Unknown. All shells collected lacked soft parts. REMARKS. — Schepman (1913) described Dinia truncatulabased on 2 shells collected from the Suluarchipelago, Philippines. Examination of the remaining syntypeof this species revealed that is it conspecific with the shells from Fijiand New Caledoniahere examined. The shells of Dinia truncatularesemble those of members of Relichna, described above, and the only feature that would suggest its inclusion in DiniatysIredale, 1936(the valid name for DiniaH. & A.Adams, 1854, which is preoccupied by DiniaWalker, 1854[ Lepidoptera]), is the presence of a conspicuous tooth on the columella, which is also present in several genera of Retusidae. This species is provisionally referred to Relichnapending anatomical information becoming available.
[463,759,439,464]
ZMA
175
762
ZMA 3.13
1
syntype
[242,1277,508,533]
LOCALITY
Philippines
522
5.725
Archipelago
925
119.666664
175
762
1
Sulu
holotype
[495,1085,580,602]
Philippines
340
The
168.7
175
762
1
DISTRIBUTION
Indonesia
316
Originally
Material
175
762
1
Philippines
Sulu
175
762
1
Sulu
syntype