1. Species Monocondyloea compressa I. Lea, 1863 accepted as Monocondylaea compressa I. Lea, 1863 accepted as Pilsbryoconcha exilis (I. Lea, 1838) (original combination; incorrect spelling of genus)
2. Species Monocondyloea lentiformis I. Lea, 1866 accepted as Monocondylaea corrientesensis (A. d'Orbigny, 1835)
3. Species Monocondyloea mardinensis I. Lea, 1865 accepted as Leguminaia wheatleyi (I. Lea, 1862)
4. Species Monocondyloea mouhotiana "I. Lea, 1866" accepted as Monocondylaea mouhotii I. Lea, 1863 accepted as Bineurus mouhotii (I. Lea, 1863) (incorrect subsequent spelling )
5. Species Monocondyloea mouhotii I. Lea, 1863 accepted as Monocondylaea mouhotii I. Lea, 1863 accepted as Bineurus mouhotii (I. Lea, 1863) (original combination; incorrect spelling of genus)
6. Species Monocondyloea pazii I. Lea, 1866 accepted as Monocondylaea minuana (A. d'Orbigny, 1835)
7. Species Monocondyloea planulata I. Lea, 1859 accepted as Pseudodon vondembuschianus vondembuschianus (I. Lea, 1840) (unaccepted > junior subjective synonym, original combination; incorrect spelling of genus)
8. Species Monocondyloea rhomboidea I. Lea, 1859 accepted as Monocondylaea rhomboidea I. Lea, 1859 accepted as Pseudodontopsis euphratica (Bourguignat, 1852) (original combination; incorrect spelling of genus)
9. Species Monocondyloea wheatleyi I. Lea, 1862 accepted as Monocondylaea wheatleyi I. Lea, 1862 accepted as Leguminaia wheatleyi (I. Lea, 1862) (original combination; incorrect spelling of genus name)

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