Description
Author: Jan Delsing
Text ID: 130703
Text Type: 1
Page: 0
Created: 2024-09-22 16:49:24 - User Delsing Jan
Language: EN
Text function: [[t:1240641,textblock=130703,elang=EN;Description]]
As Columbella albina var. minor Schepmann, 1911:
Shell of moderate to large size for the genus (8 mm - 20 mm), fusiform. Teleoconch consisting of 6-7 shouldered whorls: protoconch multispiral of 3-3.5 whorls, decollate in most specimens. Teleoconch whorls with clearly visible axial ribs on the first 1.5-2 teleoconch whorls, becoming less visible on the third teleoconch whorl; further teleoconch whorls smooth. Suture straight, shallow. Body whorl about 65% of total shell length, adorned with 10-14 basal cords: most specimens with nodules just below the suture of the body whorl. Outer lip heavily thickened, smooth outside, with 7-9 denticles on apertural side. Columella with a strongly developed raised callus, with 6-8 close-set denticles. Siphonal canal short. Shell colour mostly off-white, with various patterns of brown, black, orange or sometimes even pink. The lower part of the body whorl mostly with a brown or black band. Protoconch white. Aperture and columella purple near the edge, white inside; or completely white. Type material: Holotype ZMA 3.11.101 (length: 8.5 mm: width: 3.8 mm) Schepman only had 2 specimens of M. albina and made a very short note about his new taxon minor: "The specimen from Stat. 282 is very small, having only a length of 8.5 mm and may be indicated as forma minor, both specimens belong to the form with nodules at the back of last whorl, ..." Judging from this text, it seems that Schepman was aware that his taxon minor was just a form without taxonomical value. It should still be treated as such.
Monsecour, K. & Monsecour, D., 2007. Annotated list of columbellid species described by M.M. Schepman held in the malacological collection of the Zoologische Museum Amsterdam (Mollusca, Caenogastropoda, Columbellidae)
Distribution
Author: Jan Delsing
Text ID: 130704
Text Type: 3
Page: 0
Created: 2024-09-22 16:51:21 - User Delsing Jan
Language: EN
Text function: [[t:1240641,textblock=130704,elang=EN;Distribution]]
Type locality: Stat. 282. Between Nusa Besi and NE-point of Timor. 27-54 m. sand, coral and Lithothamnion.
Monsecour, K. & Monsecour, D., 2007. Annotated list of columbellid species described by M.M. Schepman held in the malacological collection of the Zoologische Museum Amsterdam (Mollusca, Caenogastropoda, Columbellidae)