Metacetabulum invaginatum Freitas & Lent

Chelonia mydas (Linnaeus), midle intestine, Rio de Janeiro, São Paulo (Freitas & Lent 1938; Travassos et al. 1969; Thatcher 1993) (CHIOC 7398, 9886, 9975, 9889a–c – holotype, 15433a–h).