"Chrysomallon squamiferum" was thought to be the only species of Peltospiridae, that has enlarged oesophageal gland, but later it was shown that both species "Gigantopelta" has the oesophageal gland also enlarged.In other peltospirids, the posterior portion of the oesophagus forms a pair of blind mid-oesophageal pouches or gutters extending only to the anterior end of the foot ("Rhynchopelta", "Peltospira", "Nodopelta", "Echinopelta", "Pachydermia").