Taxon profile
Images
Author: Systematisches Conchylien Cabinet.
Description
As Scaphander stigmatica Dall, 1927:
Shell much resembling Scaphander nobilis Verrill, from which it is best distinguished by a differential diagnosis. The body is flatter at the apex, shorter, and consequently has a more rotund appearance; the aperture especially in front, is narrower and less expanded; the sculpture in nobilis comprises small rounded-rectangular punctures between flattened spiral interspaces and concentric threads; in the present species the punctures are larger, circular, and close together, the intervening reticulum so fine that only toward the ends of the shell, especially in front, are the spirals wide enough to show flattening. The result of these differences is that while nobilis on a casual glance looks almost smooth, the present species has a roughly punctate appearance. Longitude, 38; maximum latitude, 20 mm. U. S. Nat. Mus. Cat. No. 9596.
Station 2127, United States Bureau of Fisheries, in 1,639 fathoms, greenish mud, south of Cuba. This shell was referred to as S. nobilis in my Blake report (pt. 2, p. 53), but under more careful microscopic scrutiny appears to be distinct. The single specimen is dead but well preserved.
Shell much resembling Scaphander nobilis Verrill, from which it is best distinguished by a differential diagnosis. The body is flatter at the apex, shorter, and consequently has a more rotund appearance; the aperture especially in front, is narrower and less expanded; the sculpture in nobilis comprises small rounded-rectangular punctures between flattened spiral interspaces and concentric threads; in the present species the punctures are larger, circular, and close together, the intervening reticulum so fine that only toward the ends of the shell, especially in front, are the spirals wide enough to show flattening. The result of these differences is that while nobilis on a casual glance looks almost smooth, the present species has a roughly punctate appearance. Longitude, 38; maximum latitude, 20 mm. U. S. Nat. Mus. Cat. No. 9596.
Station 2127, United States Bureau of Fisheries, in 1,639 fathoms, greenish mud, south of Cuba. This shell was referred to as S. nobilis in my Blake report (pt. 2, p. 53), but under more careful microscopic scrutiny appears to be distinct. The single specimen is dead but well preserved.
Dall, W.H., 1927. Small shells from dredgings off the southeast coast of the United States by the United States Fisheries Steamer 'Albatross' in 1885 and 1886.
Described in German (click German flag)
Author: Jan Delsing
Links and literature
Galli C.: WMSDB - Wolrdwide Mollusc Species Data Base July 10, 2013 [http://www.bagniliggia.it/WMSD/WMSDhome....] [as Scaphander nobilis Verrill, 1884]Data retrieved on: 23 November 2013