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Taxon profile

species

Pseudorhaphitoma transitans (Ch. Hedley, 1922)

kingdom Animalia - animals »  phylum Mollusca - mollusks »  class Gastropoda - gastropods »  order Neogastropoda »  family Mangeliidae »  genus Pseudorhaphitoma

Scientific synonyms

Pseudoraphitoma transitans Ch. Hedley, 1922

Images

Pseudorhaphitoma transitans

Author: Jan Delsing

Pseudorhaphitoma transitans

Author: Tardy, E. & Stahlschmidt, P.

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Description

Shell small, solid, biconical. Colour uniform pale buff. Whorls seven. Protoconch of two small smooth helicoid whorls. Sculpture: First adult whorl with numerous small radial riblets; on subsequent whorls the ribs are spaced seven to a whorl; they are continuous, perpendicular, and elevated ; the spirals are prominent cords which project at the intersection of the ribs, two on the upper whorls and twelve on the last one, evenly distributed from the shoulder to the anterior extremity. Aperture: Mouth narrow ; varix broad and high, of the same calibre as the ribs; sinus small and shallow ; within the aperture is a small denticule at each side of the sinus, and a small deeply-seated fold on the columella; canal short and wide. Length 4 mm., breadth 1.5 mm.
Hedley, 1922. Original description

Interchangeable taxa

In general appearance, by short stature and conspicuous spirals, this form recedes from typical Pseudorhaphitoma towards Heterocithara.

Distribution

Australia. Queensland.
Author: Jan Delsing

Similar species

Pseudorhaphitoma pyramidula (C. F. Laseron, 1954)

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