Tab. XIII. 



1. Pleurobranchus plumiila, Mont. 



2. Doris tuberculata, Cuv. 



3. — obvelata, Miill. 



4. — zetlandica, Aid. & Hanck. 



5. Lamellidoris bilamellata, Miill. 



6. — muricata-, Miill. 



