| Genus | Planoceros |
| Species | graffi |
| Authority | Lang, 1879 |
| Family | Planoceridae |
| Order | Polycladida |
| Location | Faial, Azores |
| © Copyright | Prof. Dr. Peter Wirtz, University of Madeira, Portugal |
| Comments | Due to its very thin body the highly branched gut of P. graffi is visible. |