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.

Bonellia Viridis (Female)

Illustration of a female green spoonworm. A, Proboscis cut short; B, bristle passing though the mouth…

Illustration of a male green spoonworm. A, Bonellia viridis; B, mouth; C, ventral hooks; and d, anus. The Green Spoonworm (Bonellia viridis) is a marine worm (phylum Echiura) noted for displaying exceptional sexual dimorphism and for the biocidal properties of a pigment in its skin

Bonellia Viridis (Male)

Illustration of a male green spoonworm. A, Bonellia viridis; B, mouth; C, ventral hooks; and d, anus.…

Illustration of a male green spoonworm. A, Generative pore with spermatozoa; B, Anterior blind end of intestine attached to the parenchymatous tissue by muscular strands; C, Green wandering cells containing chlorophyll; D, Parenchymatous connective tissue; Epidermis, I, Intestine; J, Vas deferens; L, Internal opening of vas deferens; M, The left anal vesicle; and M, Spermatozoa in the body-cavity.

Bonellia Viridis (Male)

Illustration of a male green spoonworm. A, Generative pore with spermatozoa; B, Anterior blind end of…