The fine structure of the protonephridial system in the land nemertean Pantinonemertes californiensis (Rhynchocoela, Enopla, Hoplonemertini)


The protonephridial terminal organ in the nemertean Pantinonemertes californiensis is composed of two cells that are similar in size and shape and are mirror images of each other. Basally in the organ the two cells combine to form a binucleate cytoplasmic mass. Apically they are intimately joined to form a subcylindrical thin-walled weir apparatus; this… (More)
DOI: 10.1007/BF00539782


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