Phascolosoma agassizii Keferstein, 1866, Keferstein, 1866

Vargas, Rita & Kawauchi, Gisele Y., 2010, Sipunculans and Echiurans of Isla del Coco (Cocos Island), Costa Rica, Zootaxa 2557, pp. 60-68: 62

publication ID 10.5281/zenodo.196936

persistent identifier

treatment provided by


scientific name

Phascolosoma agassizii Keferstein, 1866


Phascolosoma agassizii Keferstein, 1866  

Masterial examined. Punta Ulloa, 23 May 2008, one specimen, 23 mm.

Description. There are 17 well-developed longitudinal muscle bands and approximately 33 rings of hooks; hooks with indistinct triangles. The scattered papillae in the anal region are similar to the dome-like trunk papillae. This specimen lacks pigmented areas on the trunk or introvert.

Habitat. Subtidal calcareous rock, 3 m.

Remarks. This is the first record for this species from Pacific Costa Rica.

Distribution. This species is known from both sides of the Pacific Ocean, the Indian Ocean, and the southeastern Atlantic Ocean ( Cutler 1994).