Abstract
Correction is made to the published identification of Gephyroberyx darwini from the slope waters west of Britain. Convincing evidence from a variety of sources establishes Hoplostethys atlanticus as the species in question. The salient features of both species are summarized to offset any further confusion. Attention is drawn to the relative abundance of H. atlanticus to the west of Britain and to its commercial exploitation in the Southern Hemisphere off New Zealand. Evidently its value is not only in fillets, since wax esters and oils derived from the whole carcass are suitable substitutes for sperm whale or jojoba oil.