Keywords
New genus; Ischnochitonidae; deep-sea; Barbados and Martinique Islands;
Pages
pp. 177 -
183

A new genus Barbadoschiton gen. nov. [type species B. bromleyi (Ferreira, 1985)] of the family Ischnochitonidae from shelf near Barbados and Martinique Islands is described. The genus possesses unique features of the tegmentum and girdle. The central area of the intermediate valves and antemucronal area of the tail valve show teardrop-shaped granules arranged in quincunx and have only one pore of aesthete. The marginal fringe of girdle is beset with five kinds of elements, among these long, fine needles, flattened, obtuse pointed spicules with three ribs on one side; spicules with longitudinal groove on one side and with 7 longitudinal ribs, on the other side; numerous, small spicules with 5 longitudinal ribs and one longitudinal groove; flat, obtuse spicules with two warts on upper half. The ventral spicules are of two kinds: main flattened, rectangular spicules with distal appendix and three weak longitudinal ribs on external part; and small distally pointed, smooth on the outer side and with two longitudinal grooves on the opposite side of the spicules. The latter are attached in transverse rows with their proximal part between the main ventral spicules. The major lateral teeth of the radula have a tridentate head, with the middle denticle being longer than others.

DOI
10.35885/ruthenica.2024.34(4).4
Новый род хитонов (Mollusca: Polyplacophora) из островов Барбадос и Мартиника, Атлантический океан
Сиренко Б.И.; Ансью Б.;