Ankyroderma spinosum Ludwig, 1893 accepted as
Molpadia spinosa (Ludwig, 1893) (original description (unavailable nomenclaturally))
Benthodytes incerta Ludwig, 1893 (original description)
Capheira Ludwig, 1893 (original description)
Capheira sulcata Ludwig, 1893 (original description)
Euphronides tanneri Ludwig, 1893 accepted as
Psychropotes depressa (Théel, 1882) (original description)
Euphronides verrucosa Ludwig, 1893 accepted as
Psychropotes verrucosa (Ludwig, 1893) (original description)
Laetmogone theeli Ludwig, 1893 (original description)
Laetmophasma Ludwig, 1893 accepted as
Pannychia Théel, 1882 (original description)
Laetmophasma fecundum Ludwig, 1893 accepted as
Pannychia moseleyi Théel, 1882 (original description)
Meseres Ludwig, 1893 accepted as
Oloughlinius Pawson & Pawson in Pawson et al., 2015 (original description)
Meseres macdonaldi Ludwig, 1893 accepted as
Oloughlinius macdonaldi (Ludwig, 1893) (original description)
Mesites Ludwig, 1893 accepted as
Mesothuria Ludwig, 1894 (original description)
Oneirophanta affinis Ludwig, 1893 accepted as
Oneirophanta mutabilis affinis Ludwig, 1893 (original description)
Pelagothuria Ludwig, 1893 (original description)
Pelagothuria natatrix Ludwig, 1893 (original description)
Pelagothuriidae Ludwig, 1893 (original description)
Peniagone intermedia Ludwig, 1893 (original description)
Peniagone vitrea var. setosa Ludwig, 1893 accepted as
Peniagone vitrea Théel, 1882 (original description)
Psolus digitatus Ludwig, 1893 (original description)
Psolus diomedeae Ludwig, 1893 (original description)
Psychropotes dubiosa Ludwig, 1893 (original description)
Psychropotes raripes Ludwig, 1893 (original description (unavailable nomenclaturally))
Scotoanassa gracilis Ludwig, 1893 accepted as
Peniagone gracilis (Ludwig, 1893) (original description)
Scotodeima Ludwig, 1893 accepted as
Oneirophanta Théel, 1879 (original description)
Scotodeima setigerum Ludwig, 1893 accepted as
Oneirophanta setigera (Ludwig, 1893) (original description)
Sphaerothuria Ludwig, 1893 accepted as
Ypsilothuria Perrier E., 1886 (original description)
Sphaerothuria bitentaculata Ludwig, 1893 accepted as
Ypsilothuria bitentaculata (Ludwig, 1893) (original description)
Trochostoma granulatum Ludwig, 1893 accepted as
Molpadia granulata (Ludwig, 1893) (original description)
Trochostoma intermedium Ludwig, 1893 accepted as
Molpadia intermedia (Ludwig, 1893) (original description)