All Sea Slug & Nudibranch Species 136

Pyrunculus tokyoensis

Habe, 1950

Retusa concentrica

(A. Adams, 1850)

Retusa spp.

Retusa succincta

(A. Adams, 1862)

Acteocina decorata

(Pilsbry, 1904)

Acteocina exilis

(Dunker, 1860)

Acteocina fusiformis

(A. Adams, 1850)

Acteocina gordonis

(Yokoyama, 1927)

Acteocina sp.

Acteocina sp. 2

Haminoeidae sp. 3

Haminoeidae sp. 4

Haminoeidae sp. 6

Haminoeidae sp. 7

Haminoeidae sp. 8

Haminoeidae sp. 9

Haminoeidae sp.12

Haminoeidae sp.14

Haminoeidae sp. 2

Haminoeidae sp. 5

Haminoeidae sp.10

Haminoeidae sp.13

Aliculastrum cylindricum

(Helbling, 1779)

Aliculastrum debile

(Pease, 1860)

Atys kuhnsi

Pilsbry, 1917

Atys naucum

(Linnaeus, 1758)

Atys semistriatus

Pease, 1860

Atys sp. 1

Atys sp. 3

Atys sp. 4