Stenosemus sp.

Sirenko (1994) mentioned this species from the Commander Islands, West Bering Island [54 ° 59 ’N, 166 °04’E] from 2240 m.

Polyplacophora of uncertain taxonomic position

­ Paul (1976) mentioned the occurrence of an unidentifiable polyplacophoran in the northeastern Pacific (14 ° 17.5 'N, 126 ° 15.4 'W), at about 4500 m.

­ Menzies (1963) reported 5 chiton specimens from the southeastern Pacific, Peru­Chile Trench, 2000– 6000 m, and a single specimen from the same area from 3147–3255 m.

. Polyplacophora hadal and abyssal of distribution Generic. 4 FIGURE