FIGURE 20 in Megalomma Johansson, 1925 (Polychaeta: Sabellidae) from America and other world-wide localities, and phylogenetic relationships within the genus 2861

FIGURE 20. Selected structures of Megalomma pacifici (Grube, 1859). A) Tube; B) thorax, dorsal view; C, F) thorax, ventral views; D–E) thorax, lateral views; G) posterior abdomen; H) collar dorsal view; I) pygidium; J) dorsalmost radiolar eye. A–D, I–J) Megalomma pacifici (Grube, 1859); E–H) Pseudopotamilla panamica Chamberlin, 1919, MCZ, 72. A–D, J) Holotype from Costa Rica, ZMUC POL 1985; E–H) holotype from Panama, MCZ, 72; I) specimen from Costa Rica, ECOSUR. Scale bars: A: 5 mm; B–D: 3 mm; E–H: 2 mm; I–J: 0.25 mm.