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Taxon profile

species

Megalacron ambrosia Angas, 1867

kingdom Animalia - animals »  phylum Mollusca - mollusks »  class Gastropoda - gastropods »  order Pulmonata - pulmonates »  family Camaenidae »  genus Megalacron

Scientific synonyms

Papuina ambrosia Angas, 1867

Images

Megalacron ambrosia

Author: Shellauction

Megalacron ambrosia

Author: Manual of Conchology

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Description

Papuina ambrosia: Imperforate, turbinate, rounded at the periphery, having a broad-dark-brown band above (often split into two bands) which is maculated with angular patches of opaque white ; base either, unicolored deep brown or having a brown band below the periphery; lips white. The spire is conical, apex whitish, obtuse; whorls 5,5 , slightly convex, the last a little descending in front. Surface smooth, shining, lightly striatulate. There is a narrow white border below the suture, a wide white girdle at the periphery, and usually the broad blackish-brown band on the upper surface is split into two by a white zone. The base is either unicolored blackish-brown, or is white shading into brown below a dark band. Aperture oblique, subrhombic, dark within; the face and reverse of the narrowly expanded lip are white. The columella is oblique, wide, subtruncate below. Alt. 24, greater diam. 20, lesser 18,5 mill. - Alt. 19, greater diam. 18, lesser 16 mill. Galera ("Sava" or "Russell's Is.") and Ysabel Is., Solomon Group The pellucid epidermis forms angular spots on the dark bands, as in many Philippine Island Cochlostylas.
The form called H. ramsdeni by Angas is slightly larger, but has no constant differences. The specimen before me (typical in form and color), measures, Alt. 25, greater diam. 24, lesser 20 mill.
Tryon, G.W. & Pilsbry, H.A.. Manual of Conchology. Second Series. Volume 7.
Author: Jan Delsing

Links and literature

EN Galli C.: WMSDB - Wolrdwide Mollusc Species Data Base July 10, 2013 [http://www.bagniliggia.it/WMSD/WMSDhome....] [as Papuina ambrosia Angas]
Data retrieved on: 29 November 2013

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