Popis
Autor: Jan Delsing
Text ID: 102482
Text Type: 1
Page: 0
Založeno: 26.10.2020 12:38:24 - Uživatel Delsing Jan
Language: EN
Odkazová funkce: [[t:586164,textblock=102482,elang=EN;Popis]]
Shell with the apex eroded and about five rounded whorls remaining; white, covered with an olivaceous yellow periostracum; suture appressed; axial sculpture of numerous, rather irregular, prominent incremental lines; spiral sculpture of, between the sutures, about seven cordlike ridges, which on the last whorl become flatter and strap-like; the interspaces are irregular, but usually wider; between the cord at the shoulder and the suture behind there is a flattish space with four or five obsolete finer spirals; contrary to custom, the base of the last whorl and canal have no spiral sculpture; aperture short-oval, the outer lip thin, short, the body erased white, the pillar gyrate and minutely pervious; canal very short, wide, and slightly recurved; operculum with a small subspiral nucleus. Length of shell, 31; of last whorl, 20; maximum diameter, 14 mm. (Dall.)
TYPE in United States National Museum. Type locality, Bering Sea, off the Pribilof Islands, in 1,771 fathoms.
RANGE. Off the Pribilof Islands, 1,771 fathoms.
Oldroyd, I.S. The Marine Shells of the West Coast of North America. Volume II.1.