Comprehensive Description

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External Appearance

Body very long and slender, somewhat flattened below, irregular and ungraceful in form, and sluggish in movement. Head slightly broader than rest of body; snout blunt, posterior extremity of body tapering gradually to a point. The common opening of the mouth and proboscis lies ventrally a little back from the tip of the snout. The cerebral sensory organs lie far in front of the brain, and each communicates with the exterior by a canal which opens on the ventro-lateral margin near the tip of the snout. Uniform dark green above and nearly white below; sometimes greyish or yellowish green above, and very pale yellowish green below. The color of Alaska specimens is as a rule paler and more greyish green than in Mediterranean specimens. The head is bordered with a narrow band of white, uniform with that of hte lower surface. Back of the head is an inconspicuous transverse band paler than the rest of the dorsal surface. The pigment resides wholly in the integument, the muscular layers and other organs of the body being practically colorless.

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Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© Ritger, Rebecca

Source: Nemertea

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