Siphonosoma vastum (Selenka, de Man & Bulow, 1883)

Silva-Morales, Itzahí & Gómez-Vásquez, Julio D., 2021, First records and two new species of sipunculans (Sipuncula) from the Southern Mexican Pacific, European Journal of Taxonomy 740 (1), pp. 77-117 : 116

Siphonosoma vastum (Selenka & Bülow in Selenka, 1883):

103–104, pl. 12, fig. 171, pl. 13, fig. 179, as Sipunculus vastus ; type locality: Jaluit, Marshall Islands (without details). — Cutler et al. 1992: 154 ( Isla del Caño, Costa Rica, under boulders and in debris coral). — Dean 2001: 86–87 (same data as preceding). Questionable records in the TEP.