Paraxial TEM section H. huffmani polar plug region of an egg that has lost the Uterine Layer. Note: (1) the bowl-like boundary between the Inner Layer of Polar Plug and the Electron-dense Parietal Coating; (2) how innermost lamellae of Inner Chitinous Layer terminate before reaching polar canal; (3) complete absence of flaring among lamellae as they approach canal in contrast to Trichuris; (4) absence of any suggestion of a collar.