Arthur William Baden Powell was a New Zealand malacologist, naturalist and palaeontologist, a major influence in the study and classification of New Zealand molluscs through much of the 20th century. He was known to his friends and family by his third name, "Baden".
Opalia ahiparana is a species of very small deepwater sea snail, a marine gastropod mollusk in the family Epitoniidae, the wentletraps.
Lodderena formosa is a minute sea snail or micromollusc, a marine gastropod mollusc in the family Skeneidae.
Lodderena nana is a species of minute sea snail or micromollusc, a marine gastropod mollusc in the family Skeneidae.
Glaphyrina plicata is a species of large sea snail, a marine gastropod mollusc in the family Fasciolariidae.
Alcithoe jaculoides is a species of large sea snail, a marine gastropod mollusc in the family Volutidae, the volutes.
Zebittium editum is a species of minute sea snail, a marine gastropod mollusc in the family Cerithiidae, the cerithiids. This species is found only in New Zealand.
Annaperenna verrucosa, common name the warty ranella, is a species of large sea snail, a marine gastropod mollusc in the family Bursidae, known as the frog shells.
Cirsonella consobrina is a minute sea snail, a marine gastropod mollusc in the family Skeneidae.
Xenuroturris millepunctata is a species of sea snail, a marine gastropod mollusk in the family Turridae, the turrids.
Duplicaria tristis is a species of sea snail, a marine gastropod mollusk in the family Terebridae, the auger snails.
Mauidrillia is a genus of sea snails, marine gastropod mollusks in the family Horaiclavidae, the turrids.
Attenuata is a genus of minute sea snails, marine gastropod mollusks or micromollusks in the family Lironobidae.
Turbonilla aoteana is a species of sea snail, a marine gastropod mollusk in the family Pyramidellidae, the pyrams and their allies.
Spectamen tryphenense is a species of sea snail, a marine gastropod mollusk in the family Solariellidae. This marine species is endemic to New Zealand and occurs off the Great Barrier Island
Liracraea epentroma is a species of sea snail, a marine gastropod mollusk in the family Mangeliidae.
Powellisetia unicarinata is a species of marine gastropod mollusc in the family Rissoidae. First described by Powell in 1930 as Notosetia unicarinata, it is endemic to the waters of New Zealand.
Aclis subcarinata is a species of sea snail, a marine gastropod mollusk in the family Eulimidae.
Aclis pseudopareora is a species of sea snail, a marine gastropod mollusk in the family Eulimidae.
Aclis expansa is a species of sea snail, a marine gastropod mollusk in the family Eulimidae.
