FIGURE 12 in Megalomma Johansson, 1925 (Polychaeta: Sabellidae) from America and other world-wide localities, and phylogenetic relationships within the genus 2861

FIGURE 12. Megalomma gesae Knight-Jones, 1997. A) Collar and keel as indicated with arrow; B) thorax, dorsolateral view; C) ventral sacs as indicated with arrow; D) dorsalmost radiolar eye; E) posterior abdomen and pygidium. A–E) Specimen from Balboa, Panama, ECOSUR. Abbreviations: apr anterior peristomial ring. Scale bars: A–C, E) 1 mm; D) 0.3 mm.