-800~900m, Trawled, Kinkasan, Miyagi Prefecture, Japan, 85.1mm., F, 2008/vi.
The « Kashima-nada Whelk » is a large cold-water buccinid endemic to the Pacific Japan, ranging from Kagoshima Prefecture to Hokkaido. The inflated white shell is thin and fragile, with a light yellowish brown periostracum which are usually pustulate. It is extremely variable in the development of spiral ribs and has several forms ranging from completely lacking (the depicted form) to two very strongly raised ribs (holotype form) to having numerous weak ribs. The overall form is less variable, although may be considerably more elongate than the depicted form; the name Buccinum boucheti Tiba, 1984 (replacement name for Buccinum concinnum Tiba, 1980 which is a junior homonym of B. concinnum Dillwyn, 1817) was given to the elongate form, now a synonym of B. kashimanum. It is a locally uncommon carnivorous / scavenging gastropod inhabiting sandy to muddy bottoms of deep water ranging from -500~2000m. Typical shell length around 80mm., very large specimens may exceed 100mm. Although it very rarely appears on the fish market, it is one of the most delicious Japanese Buccinum species. It is named after its type locality Kashima-nada, a section of the Pacific Japan ranging from Oarai, Ibaraki Prefecture to Inubousaki ( = Cape Inubo), Chiba Prefecture.