FIG. 6. — A, Xylophaga alexisi n in At the bottom of the deep blue sea: a new wood-boring bivalve (Mollusca, Pholadidae, Xylophaga) from the Cape Verde Abyssal Plain (subtropical Atlantic)

FIG. 6. — A, Xylophaga alexisi n. sp., lateral view to define "incomplete siphon" in which the excurrent siphon is considerably shorter than the incurrent siphon; B, Xylophaga pacifica Voight, 2009, lateral view to define "complete siphon", in which both siphonal openings are roughly equal in length. Scale bars: 1 mm.