JAPANESE NÜDIBBANCHS. 3 



to the genus Melibe which are plentiful in Japanese waters are 

 remarkable even among nudibranchs for their soft texture and I 

 can affirm from personal observations that their shape sometimes 

 changes remarkably when they are put into alcohol. Such change 

 may be very deceptive because it is often not an obvious distor- 

 tion but appears natural. I confess that I feel doubtful as to the 

 specific distinctness of M. papulosa, pilosa and vexillifera. 

 The following is a list of the species noticed below. 



Holohepatica. 



Page 



1. Doris {Homoiodoris) japonica Bgh 4 



2. Doris (Ctenodoris) aurantiaca sp. nov 5 



3. Ecliinodoris armata sp. nov 7 



4. Discodoris continua A. & H ... 8 



5. Halgerda japonica sp. nov 9 



6. „ graphica Basedow & Hedley 10 



7. Platijdoris speciosa (Abraham) 13 



8. ,, tabulala ( ,, ). 15 



9. Platydoris cruenta (Q. & G.) 17 



10. „ striata (Kelaart.) 18 



11. Rostanga muscula (Abraham) ? 20 



12. Cadlina (or Tyrinna) sp 21 



13. Sphœrodoris japonica sp. nov 23 



14. Ceratosoma cornigerum Adams 27 



15. Chromodoris sibogae Bgh ,, 



16. ,, pallescens Bgh 28 



17. ,, marenzelleri Bgh 29 



18. Plocamopherus tilesii Bgh 30 



19. ,, imperialis Angas ,, 



20. Euplocamus japonicus (?) Bgh ,, 



21. Kalinga ornata A. & Ii .• 31 



22. Phyllidia nobilis Bgh 32 



23. ,, pustulosa Cuv ,, 



24. Doridopsis rubra (Kelaart) ,, 



25. „ nigra (Stimpson). 33 



