Doris aspera Alder & Hancock, 1842 accepted as Onchidoris muricata (O. F. Müller, 1776) (original description)
Doris depressa Alder & Hancock, 1842 accepted as Idaliadoris depressa (Alder & Hancock, 1842) (original description)
Doris repanda Alder & Hancock, 1842 accepted as Cadlina laevis (Linnaeus, 1767) (original description)
Doris similis Alder & Hancock, 1842 accepted as Acanthodoris pilosa (Abildgaard, 1789) (original description)
Eolis aurantia Alder & Hancock, 1842 accepted as Catriona aurantia (Alder & Hancock, 1842) (original description)
Eolis hystrix Alder & Hancock, 1842 accepted as Eubranchus cingulatus (Alder & Hancock, 1847) accepted as Eubranchus vittatus (Alder & Hancock, 1842) (original description)
Eolis minuta Alder & Hancock, 1842 accepted as Eubranchus pallidus (Alder & Hancock, 1842) accepted as Amphorina pallida (Alder & Hancock, 1842) (original description)
Eolis nana Alder & Hancock, 1842 accepted as Cuthona nana (Alder & Hancock, 1842) (original description)
Eolis obtusalis Alder & Hancock, 1842 accepted as Aeolidia papillosa (Linnaeus, 1761) (original description)
Eolis olivacea Alder & Hancock, 1842 accepted as Cuthona foliata (Forbes & Goodsir, 1839) accepted as Trinchesia foliata (Forbes & Goodsir, 1839) (original description)
Eolis pallida Alder & Hancock, 1842 accepted as Amphorina pallida (Alder & Hancock, 1842) (original description)
Eolis rosea Alder & Hancock, 1842 accepted as Aeolidia papillosa (Linnaeus, 1761) (original description)
Eolis vittata Alder & Hancock, 1842 accepted as Eubranchus vittatus (Alder & Hancock, 1842) (original description)
Polycera ocellata Alder & Hancock, 1842 accepted as Palio nothus (G. Johnston, 1838) (original description)
Tritonia pulchella Alder & Hancock, 1842 accepted as Dendronotus frondosus (Ascanius, 1774) (original description)