Gosliner & Johnson, 1994
Known only from Indonesia, and now Japan.
Kerama Is. near Okinawa, Japan., 10m depth under side of a rock. 13mm & 9mm long. PHOTOS: Atsushi Ono.
Animals are translucent with an opaque white pattern to match the sponge on which they live and presumably feed. The gills and rhinophores are translucent white except for a black streak down the rhinophore club [described as "black subapical spot" in Gosliner & Johnson].
•Gosliner, T.M. & Johnson, S. (1994) Review of the genus Hallaxa (Nudibranchia: Actinocyclidae) with descriptions of nine new species. The Veliger, 37(2): 155-191.
See Atsushi Ono's message below.Authorship details
Rudman, W.B., 2000 (February 14) Hallaxa paulinae Gosliner & Johnson, 1994. [In] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/factsheet/hallpaul