Bohmig L 1895 (citation)- description and illustration from plankton, p 36 and plate III. Sabussow H 1896 (citation)- in comparison with H. ussowi.- parasites in? Lohner L, Micoletzky H 1911 (citation)- mention statocyst in p 397. Luther A 1912 (citation)- mentions this species. Westblad E 1948 (citation)- p 25 on longitudinal nerves in. Dorjes J 1968 (citation)- definition p 265- in discussion p 261-4 reprint- good species.
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