Bonellia Viridis (Female)
Illustration of a female green spoonworm. A, Proboscis cut short; B, bristle passing though the mouth into the pharynx; C, coiled intestine; D, anal tufts or vesicles; E, ventral nerve cord; F, ovary borne on ventral vessel running parallel with e; G, position of anus; H,, position of external opening of; I, nephridium --- the line points towards, but does not reach, the internal opening.
Encyclopaedia Britannica (11th ed., vol. 8) (New York, NY: The Encyclopaedia Britannica Company, 1910)