Collastoma kozloffi sp. n. is described from the intestine of the sipunculan, Themiste dyscrita, collected at three localities on the Oregon coast. This species is particularly distinctive because of its large egg capsule (length about 400-500 ,m). The relationships of the five known species of Collastoma are discussed.
Westervelt Jr, Clinton A. "Collastoma kozloffi sp. n., a neorhabdocoel turbellarian from the intestine of the sipunculan Themiste dyscrita." The Journal of Parasitology 67.4 (1981): 574-577.
American Society of Parasitologists