Taxon classification Animalia Heteronemertea Monostilifera

Amphiporus cf. ochraceus (Verrill, 1873) Fig. 3 H–J

Description.

Four specimens up to about 10 mm long, 0.5 mm wide; dorsoventrally flattened, bluntly rounded at both ends. Variable color, yellowish to milky gray, sometimes with light orange pigmentation in cephalic region corresponding to cerebral ganglia. Cerebral organ furrows vertical, precerebral. About 6-10 conspicuous, blackish, precerebral ocelli, arranged in single regular row, along each lateral margin of head. Rhynchopore subterminal; rhynchocoel about three quarters of body length; proboscis long; medially constricted basis same length as slender stylet (length: 29 µm); 2 pouches with 2 accessory stylets each.

Distribution.

Gulf of Mexico and New England (USA) (Norenburg 2009); Santa Marta, Colombia.