@book {pdf, title = {Neue wirbellose Thiere beobachtet und gesammelt auf einer Reise um die Erde 1853 bis 1857. Bd I: Turbellarien, Rotatorien und Anneliden.}, year = {1859}, note = {2905}, publisher = {Wilhelm Engelmann}, organization = {Wilhelm Engelmann}, type = {book}, address = {Leipzig}, abstract = {Describes: Macrostomum setosum n. sp. (could be a Macrostomum, but given the description it is clearly unidentifiable) Macrostomum ceylanicum n. sp. (must be a catenulid, the protonephridial canal is very characteristic)}, keywords = {Macrostomum}, author = {Schmarda, Ludwig L} }