Uterus consisting of two different parts: an anterior part with common shape, and a posterior, sac-shaped par with many mature egg cocoons (sometimes half a dozen). The germaries long and unforked, directed backward in the longish posterior end. The seminal vesicle oviform.--Parasites in the intestine of sea-cucumbers.
1. Pharynx just in front of the middle part of the body. No eosophageal part (?). A long intestine. The testicles big and branched. A protrusive, muscular penis. The vitellaries consisting of two main stems at each side. The vagina only provided with a receptaculum (?)...............................O. arbora (OZAKI) (in Stichopus japonicus SELENKA).
2. Pharynx near the anterior end of the body. A muscular eosophageal part and a short intestine. The testicle small and unforked. A cuticular penis stiletto. The vitellaries consisting of one main stem at each side. The vagina provided with aqn anterior receptaculum and a posterior bursa copulatrix................O. elegans n.sp. (in Stichopus tremulus (GUNN.)
[From Westblad E (1953): 287]
Notes from synonyms
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