Acirsa annectens A. W. B. Powell, 1951 accepted as Gregorioiscala annectens (A. W. B. Powell, 1951) (original description)
Admete consobrina A. W. B. Powell, 1951 accepted as Nothoadmete consobrina (A. W. B. Powell, 1951) (original description)
Amauropsis (Kerguelenatica) A. W. B. Powell, 1951 accepted as Kerguelenatica A. W. B. Powell, 1951 (original description)
Antimargarita A. W. B. Powell, 1951 (original description)
Antitrichotropis A. W. B. Powell, 1951 accepted as Torellia Jeffreys, 1867 (original description)
Belalora A. W. B. Powell, 1951 (original description)
Belalora thielei A. W. B. Powell, 1951 (original description)
Belaturricula A. W. B. Powell, 1951 (original description)
Brookula pfefferi A. W. B. Powell, 1951 accepted as Benthobrookula pfefferi (A. W. B. Powell, 1951) (original description)
Brookula strebeli A. W. B. Powell, 1951 accepted as Benthobrookula strebeli (A. W. B. Powell, 1951) (original description)
Cavineptunea A. W. B. Powell, 1951 (original description)
Cavineptunea monstrosa A. W. B. Powell, 1951 (original description)
Chlanidota paucispiralis A. W. B. Powell, 1951 (original description)
Chlanidota pilosa A. W. B. Powell, 1951 (original description)
Chlanidota signeyana A. W. B. Powell, 1951 (original description)
Colpospirella A. W. B. Powell, 1951 accepted as Turritella Lamarck, 1799 (original description)
Colpospirella algida (Melvill & Standen, 1912) accepted as Turritella algida Melvill & Standen, 1912 (basis of record)
Conorbela A. W. B. Powell, 1951 (original description)
Discotrichoconcha A. W. B. Powell, 1951 (original description)
Discotrichoconcha cornea A. W. B. Powell, 1951 accepted as Torellia cornea (A. W. B. Powell, 1951) (original description)
Falsilunatia A. W. B. Powell, 1951 (original description)
Falsimargarita A. W. B. Powell, 1951 (original description)
Falsimohnia A. W. B. Powell, 1951 (original description)
Icoplax punicea (A. Gould, 1846) accepted as Callochiton puniceus (A. Gould, 1846) (basis of record)
Kaitoa scaphandroides A. W. B. Powell, 1951 (original description)
Laevilacunaria A. W. B. Powell, 1951 (original description)
Laevilacunaria (Pellilacunella) A. W. B. Powell, 1951 accepted as Laevilitorina (Pellilacunella) A. W. B. Powell, 1951 represented as Laevilitorina Pfeffer, 1886 (original description)
Laevilacunaria (Pellilacunella) bennetti (Preston, 1916) accepted as Laevilacunaria bennetti (Preston, 1916) (basis of record)
Laevilitorina (Corneolitorina) A. W. B. Powell, 1951 accepted as Laevilitorina (Laevilitorina) Pfeffer, 1886 represented as Laevilitorina Pfeffer, 1886 (original description)
Leptocollonia A. W. B. Powell, 1951 (original description)
Leptocollonia thielei A. W. B. Powell, 1951 (original description)
Leucosyrinx falklandica A. W. B. Powell, 1951 accepted as Antarctospira falklandica (A. W. B. Powell, 1951) (original description)
Leucosyrinx paragenota A. W. B. Powell, 1951 accepted as Bela angusteplicata Strebel, 1905 accepted as Antarctospira angusteplicata (Strebel, 1905) (original description)
Leucosyrinx paratenoceras A. W. B. Powell, 1951 accepted as Typhlodaphne paratenoceras (A. W. B. Powell, 1951) (original description)
Lorabela A. W. B. Powell, 1951 (original description)
Margarella bouvetia A. W. B. Powell, 1951 (original description)
Margarella jason A. W. B. Powell, 1951 (original description)
Margarella porcellana A. W. B. Powell, 1951 (original description)
Margarella tropidophoroides obsoleta A. W. B. Powell, 1951 accepted as Margarella obsoleta A. W. B. Powell, 1951 (original description)
Miomelon scoresbyanum A. W. B. Powell, 1951 accepted as Pachycymbiola scoresbyana (A. W. B. Powell, 1951) (original description)
Notoficula problematica A. W. B. Powell, 1951 accepted as Parficulina problematica (A. W. B. Powell, 1951) (original description)
Paradmete percarinata A. W. B. Powell, 1951 (original description)
Pareuthria venustula A. W. B. Powell, 1951 (original description)
Parvaplustrum A. W. B. Powell, 1951 (original description)
Parvaplustrum tenerum A. W. B. Powell, 1951 (original description)
Philine falklandica A. W. B. Powell, 1951 accepted as Antarctophiline falklandica (A. W. B. Powell, 1951) (original description)
Photinastoma A. W. B. Powell, 1951 (original description)
Pleurotomella anomalapex A. W. B. Powell, 1951 (original description)
Polinices patagonicus (R. A. Philippi, 1845) accepted as Euspira patagonica (R. A. Philippi, 1845) (basis of record)
Probuccinum angulatum A. W. B. Powell, 1951 (original description)
Probuccinum delicatulum A. W. B. Powell, 1951 (original description)
Proneptunea duplicarinata A. W. B. Powell, 1951 (original description)
Proneptunea fenestrata A. W. B. Powell, 1951 (original description)
Prosipho perversus A. W. B. Powell, 1951 accepted as Antistreptus perversus (A. W. B. Powell, 1951) (original description)
Prosiphoninae A. W. B. Powell, 1951 accepted as Prosiphonidae A. W. B. Powell, 1951 (original description)
Sinuber A. W. B. Powell, 1951 (original description)
Sinuber sculptum scotianum A. W. B. Powell, 1951 (original description)
Solariella kempi A. W. B. Powell, 1951 (original description)
Solariellinae A. W. B. Powell, 1951 accepted as Solariellidae A. W. B. Powell, 1951 (original description)
Terenochiton kerguelensis (Haddon, 1886) accepted as Leptochiton kerguelensis Haddon, 1886 (basis of record)
Trochita georgiana A. W. B. Powell, 1951 accepted as Trochita pileolus (A. d'Orbigny, 1841) (original description)
Tromina bella A. W. B. Powell, 1951 accepted as Falsitromina bella (A. W. B. Powell, 1951) (original description)
Tromina fenestrata A. W. B. Powell, 1951 accepted as Falsitromina fenestrata (A. W. B. Powell, 1951) (original description)
Tromina simplex A. W. B. Powell, 1951 accepted as Falsitromina simplex (A. W. B. Powell, 1951) (original description)
Tromina tricarinata A. W. B. Powell, 1951 accepted as Falsitromina tricarinata (A. W. B. Powell, 1951) (original description)
Trophon (Fuegotrophon) A. W. B. Powell, 1951 accepted as Fuegotrophon A. W. B. Powell, 1951 (original description)
Trophon (Stramonitrophon) A. W. B. Powell, 1951 accepted as Trophon Montfort, 1810 (original description)
Trophon cuspidarioides A. W. B. Powell, 1951 accepted as Enixotrophon cuspidarioides (A. W. B. Powell, 1951) (original description)
Trophon echinolamellatus A. W. B. Powell, 1951 accepted as Trophonella echinolamellata (A. W. B. Powell, 1951) (original description)
Trophon poirieria A. W. B. Powell, 1951 accepted as Enixotrophon poirieria (A. W. B. Powell, 1951) (original description)
Trophon scotianus A. W. B. Powell, 1951 accepted as Trophonella scotiana (A. W. B. Powell, 1951) (original description)
Trophon shackletoni paucilamellatus A. W. B. Powell, 1951 accepted as Trophon paucilamellatus A. W. B. Powell, 1951 (original description)
Tropidomarga A. W. B. Powell, 1951 (original description)
Tropidomarga biangulata A. W. B. Powell, 1951 (original description)
Turritellopsis thielei A. W. B. Powell, 1951 (original description)
Typhlodaphne A. W. B. Powell, 1951 (original description)
Typhlodaphne strebeli A. W. B. Powell, 1951 (original description)
Venustatrochus A. W. B. Powell, 1951 (original description)
Venustatrochus georgianus A. W. B. Powell, 1951 (original description)
Xymenopsis A. W. B. Powell, 1951 (original description)
Xymenopsis albidus (R. A. Philippi, 1846) accepted as Xymenopsis buccineus (Lamarck, 1816) (basis of record)

Antarctic Peninsula for Discotrichoconcha cornea A. W. B. Powell, 1951 
Antarctica for Trophon echinolamellatus A. W. B. Powell, 1951 
Falkland Islands Exclusive Economic Zone for Parvaplustrum tenerum A. W. B. Powell, 1951 
Falkland Islands Exclusive Economic Zone for Philine falklandica A. W. B. Powell, 1951 
South Georgia for Cavineptunea monstrosa A. W. B. Powell, 1951 
South Georgia for Leptocollonia thielei A. W. B. Powell, 1951 
South Georgia for Tropidomarga biangulata A. W. B. Powell, 1951 
South Georgia for Venustatrochus georgianus A. W. B. Powell, 1951