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Amalda
rubrofasciata
Ninomiya, 1991 Description: Shell slender, often translucent, aperture length about one-half of total
shell length. Spire
calloused, callus terminating in front of the aperture; suture concealed
by callus. Spire whorls
weakly to strongly spirally ribbed, ribs ending in front of the
aperture. Body whorl with calloused subsutural band, edged by weak
ridge below. Non-calloused
part of body whorl with microscopic axial and spiral striae.
Columella pillar with about five plaits; fasciolar band with weak
central ridge, upper half flat and smooth, lower half rounded; ancillid
band not excavated, bordered by a groove above. Non-calloused area of
body whorl off-white; subsutural band tan, either continuous, or
usually, broken into rectangular patches, these usually not reaching the
sub-sutural groove. Area
above the ancillid groove, the ancillid band, and top half of anterior
fasciole often weakly suffused with tan. Pillar area white.
Operculum brown, corneous. Size:
Up to 19 mm in length. Distribution: Endemic to Habitat:
Known from 6-201 metres. Uncommon. Comparison:
This species is very similar to A.
edithae, but differs by having the ancillid band not excavated, and
subtle differences in coloration; it never has the axial zigzag lines
seen on some specimens of A.
edithae, and the marking on the base are always faint and
indistinct, not the well defined band seen in A.
edithae.
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