Fig. 6

Comparative schematic drawings of the overall nervous system of adult Hypania invalida (a-c) and aulophora larvae of Lanice conchilega (d, e). Nervous system is yellow, short buccal tentacles are orange and long buccal tentacles are colored in light yellow, the evertable pharynx is colored in mint green, see legend. A. Drawing of the anterior region of adult Hypania invalida, pharynx in inverted position. B. Close-up of the head region, see Fig. A. C. Drawing of the anterior region of adult Hypania invalida, pharynx in everted position. D. Drawing of the anterior region of aulophora larvae of Lanice conchilega. E. Close-up of the head region, see Fig. D. brga – ganglion of branchiae; br – branchiae; brn – branchiael nerves; cc – circumoesophageal connectives; cdbr – connective of dpbr; cvbr – connective of vpbr; dpbr – dorsal region of brain; ey – eye; llin – lateral lip nerves; lin – lip nerves; ln – lateral nerves; lolin – lower lip nerve; lon – lateral organ nerve; lte – long buccal tentacles; nu – nuchal organ; oe – oesophagus; ph – pharynx; prn – prostomial nerves; ste – short buccal tentacles; stnl – stomatogastric nerve loop; te - buccal tentacle; tn – tentacle nerves; tga – tentacular ganglion; vnc – ventral nerve cord, dvbr – dorsal root of vpbr; vvbr – ventral root of vpbr