Ptyssostoma thalassemae Hentschel 1927

Hentschel 1927. On a new ciliate, Ptyssostoma thalassemae nov. gen., nov. sp., from the intestine of the echiuroid worm, Thalassema neptuni Gartner. Journal of the Marine Biological Association Plymouth NS, 14 1927: pp. 651-655