Aplysia sagamiana Baba, 1949 (original description)
Armina appendiculata Baba, 1949 (original description)
Armina major Baba, 1949 (original description)
Ceratosoma bicolor Baba, 1949 (original description)
Crimora lutea Baba, 1949 (original description)
Dendronotus gracilis Baba, 1949 (original description)
Dermatobranchus multidentatus Baba, 1949 (original description)
Dermatobranchus nigropunctatus Baba, 1949 (original description)
Dermatobranchus sagamianus Baba, 1949 (original description)
Dermatobranchus semistriatus Baba, 1949 (original description)
Dermatobranchus striatellus Baba, 1949 (original description)
Dermatobranchus substriatus Baba, 1949 (original description)
Favorinus japonicus Baba, 1949 (original description)
Favorinus perfoliatus Baba, 1949 (original description)
Goniodoris felis Baba, 1949 accepted as Pelagella felis (Baba, 1949) (original description)
Gymnodoris subflava Baba, 1949 (original description)
Kaloplocamus acutus Baba, 1949 (original description)
Madrella gloriosa Baba, 1949 (original description)
Madrella granularis Baba, 1949 (original description)
Okenia echinata Baba, 1949 (original description)
Okenia japonica Baba, 1949 accepted as Bermudella japonica (Baba, 1949) (original description)
Paratritonia Baba, 1949 (original description)
Paratritonia lutea Baba, 1949 (original description)
Polycera japonica Baba, 1949 (original description)