Tag Archive for: Indo-West Pacific

Microstellaria juliae – a remarkable new subfamily, new genus and new species in the Pyramidellidae (Gastropoda)

Authors: J.G.M. Raven, R.G. Moolenbeek
Basteria, 88 (1): 95-103Published:

Abstract

A new genus and species within the Pyramidellidae are described from offshore coral reefs at various localities in Indonesia and from the Royal Charlotte atoll in the South China Sea: Microstellaria juliae gen. et spec. nov. Thus far only dead specimens have been found. The remarkable discoidal, planispiral shells with regularly placed projecting spines appear to be miniature versions of Stellaria Möller, 1832 (family Xenophoridae) or juvenile Astraea Röding, 1798 (Turbinidae). The heterostrophic protoconch at an almost 90o angle to the teleoconch demonstrates its placement within the Pyramidelloidea, however, the shells have some unique features. The internal septa in the early part of the teleoconch have not been recorded before from the Pyramidelloidea. They are interpreted as preventive measure in case the protoconch is damaged. The planispiral shape is exceptional within the Pyramidellidae, albeit not unique. The projecting spines along the periphery and on the aperture are unique within the superfamily. Therefore the genus is placed within a new subfamily Microstellariinae subfam. nov., currently within the Pyramidellidae, but it could constitute a separate family within the Pyramidelloidea.

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A review of Hecuba Schumacher, 1817 (Bivalvia: Donacidae), with description of a new species and validation of Hecuba pubescens (Linnaeus, 1758), overlooked for more than 250 years

Authors: J.G.M. Raven, H. Dekker
Basteria, 86 (2): 96-113Published:

Abstract

Using museum collections and historical literature the donacid genus Hecuba is revised. Three species are recog­nised, H. scortum (Linnaeus, 1758), H. pubescens (Linnaeus, 1758) and a new species described herein as H. reticulata Raven & Dekker. Each are described, figured and their geo­graphical distributions are reviewed. Hecuba rosea Schumacher, 1817 is shown to be a junior synonym of Donax striatus Linnaeus, 1767, not of Donax vittatus Linnaeus, 1758.

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Download articleArtikel A review of Hecuba Schumacher, 1817 (Bivalvia: Donacidae), with description of a new species and validation of <em>Hecuba pubescens</em> (Linnaeus, 1758), overlooked for more than 250 years

Nassarius siquijorensis (A. Adams, 1852) and N. crenelliferus (A. Adams, 1852), two similar and often misidentified species (Gastropoda: Nassariidae)

Authors: H.H. Kool, C. Gili
Basteria, 86 (1): 37-43Published:

Abstract

In 1984 W.O. Cernohorsky reviewed the Indo-West Pacific species of Nassariidae. He revised Nassarius siquijorensis (A. Adams, 1852) and among the many synonyms listed were N. crenelliferus (A. Adams, 1852) and N. cingendus (Marrat, 1880). In this paper N. crenelliferus is considered to be a valid species and N. cingendus a synonym of this species, not a synonym of N. siquijorensis. Nassarius siquijorensis remains a valid species and its type location is designated.

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The identity of Meioceras elongatum de Folin, 1881 (Gastropoda, Caenogastropoda, Caecidae)

Author: A. Vannozzi
Basteria, 83 (1/3): 35-38Published:

Abstract

Meioceras elongatum de Folin, 1881, has been described from “mers de Chine” (China Seas) and was never recorded thereafter. The three syntypes are not conspecific and have probably a different origin. To stabilize the nomenclature, the specimen best fitting the original description and illus­tration is here selected as lectotype. As a consequence, Mei­oceras elongatum has to be considered a junior synonym of M. nitidum (Stimpson, 1851).

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