| Citation | Cutler, N.J., E.B. Cutler and J.A. Vargus, 1992 Peanut worms (Sipuncula) from Costa Rica. Revista de Biología Tropical 40(1):153-158. |
| Ref. | 2040 Cutler, N.J., E.B. Cutler and J.A. Vargus, 1992 |
| Page | |
| Named Used as Valid | Siphonosoma vastum |
| Locality | |
| Distribution | Pacific coasts of Costa Rica. |