A. R. Kosyan
Severtsov Institute of the Problems of Ecology and Evolution, Russian Academy of Sciences, Moscow, Russia
e-mail: kosalisa@rambler.ru
Received January 18, 2007; in final form, February 14, 2007
Abstract—Data on the distribution of six genera of poorly studied buccinids of the Colinae subfamily (Neo-
gastropoda, Buccinidae), namely, Colus Röding, 1799; Plicifusus Dall, 1902; Retifusus Dall, 1916; Aulacofusus
Dall, 1918; Pararetifusus Kosuge, 1967; and Latisipo Dall, 1916, are presented. These mollusks are widely
spread in the North Pacific region dwelling predominantly over loose sediments in a wide range of sea depths.
Based on the morphology and contents of their digestive tracts, it is assumed that the representatives of the gen-
era studied are predators with diverse diets. It is supposed that the increase in the dwelling depths had no sig-
nificant influence on the feeding ecology of the species studied. Meanwhile, the lower abundance of preys at
greater depths caused the lower population densities and modifications in the proboscis structure of selected
taxa.
DOI: 10.1134/S0001437007040108
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