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Taxon profile

species

Favartia peasei G. W. Tryon, 1880

kingdom Animalia - animals »  phylum Mollusca - mollusks »  class Gastropoda - gastropods »  order Neogastropoda »  family Muricidae - Muricids »  genus Favartia

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Favartia peasei

Author: Radwin & D'Attilio

Favartia peasei

Author: Jan Delsing

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Description

The shell is small for the genus (maximum length 16 mm) and roughly fusiform or narrowly biconic. The spire is high and subacute, consisting of five convex postnuclear whorls and a protoconch of undetermined nature. The suture is obscured by strong sculptural elements on the shoulder. The body whorl is stoutly fusoid. The aperture is small and ovate, with a very narrow, shallow anal sulcus. The outer apertural lip is somewhat erect and weakly, marginally crenulate; the inner surface is weakly undulate, corresponding to the crenulations on the lip margin. The columellar lip is detached and erect, except for a tiny adherent area at its posterior end. The siphonal canal is short and stout, barely open, and abruptly, dorsally turned at its distal end; at its upper (i.e. posterior) end, the right margin briefly overlaps the left but is not fused with it.
The body whorl bears six heavy, low varices. Earlier whorls bear seven varices. Spiral sculpture consists chiefly of five coarse, heavy major cords: one on the shoulder, three on the body, and one on the canal. Otherwise, there are several finer cords or threads on the shoulder and on the canal. Numerous fine axial lamellae cover the shell; where these intersect the major cords, marked, laterally compressed, vaulted scales arc produced. Rather deep spaces separate the major cords, and large, excavated areas are apparent on the shoulder and at the base of the body. The last varix is moderately well-developed into a rather broad, flangelike structure, briefly dorsally reflected at its margin; the leading edge of the last varix is densely fimbriate, the fimbriae producing a draped effect, this imparted by the undulations of the fimbriae, and radial struts that correspond to the major spiral cords. Earlier varices are not as well-developed as the last. Shell color is pale yellow-white, overlaid by a thick, flat-white intritacalx. The aperture is porcelaneous white.
Radwin, G.E. & D'Attilio, A., 1976. Murex Shells of the World. An Illustrated Guide to the Muricidae.

Distribution

Known only from the western Pacific (type locality not noted; other specimens studied from Fiji and from Ataa, Malaita, British Solomon Islands).
Radwin, G.E. & D'Attilio, A., 1976. Murex Shells of the World. An Illustrated Guide to the Muricidae.
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 Favartia peasei (Tryon, 1880)]
Data retrieved on: 23 November 2013

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