A shore-based preliminary survey of marine ribbon worms (Nemertea) from the Caribbean coast of Colombia Author Gonzalez-Cueto, Jaime Author Quiroga, Sigmer Author Norenburg, Jon text ZooKeys 2014 439 83 108 http://dx.doi.org/10.3897/zookeys.439.5965 journal article http://dx.doi.org/10.3897/zookeys.439.5965 1313-2970-439-83 12DE8ECB196649A7B5DE89A54CE7F677 Taxon classification Animalia Heteronemertea Valenciniidae Baseodiscus delineatus (Delle Chiaje, 1825) Fig. 2 C-E Description. Six specimens up to about 50 mm long, 2 mm wide; dorsoventrally flattened; cephalic lobe broadly rounded. Milky ground color; dorsally with abundant short interrupted reddish to brown longitudinal lines, paler or completely absent on ventral surface. Shallow, cerebral organ furrows post-cerebral, vertical and slightly oblique, with inconspicuous, orthogonally oriented secondary furrows. Numerous ocelli arranged irregularly along antero-lateral margin of head. Mouth ventral, posterior to cerebral organ furrows. Proboscis pore at anterior of head; proboscis short and thin. Distribution. This species seems to be circumglobal in tropical and subtropical seas ( Norenburg 2009 ).