All specimens, including holotypes, are deposited in the Allan Hancock Foundation. Ecological data and records of associated organisms are given in a subsequent part of this volume. Reference to bibliographic citations may be found at the end of this account, and in Hartman, 1959.
The collections were largely taken with a grabbing device called the Campbell grab (Hartman, 1955a). This is not effective in rocky habitats; animals characteristic of such bottoms are better recovered with a dredge or trawl, such as were employed during the operations of the USS ALBATROSS (reported by Moore, 1910 to 1923). Consequently some of the deep water species named from basin depths of southern California have not been taken during current operations.
[None. Introductionas follows:]