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218 BOUCHET&ROCROI
OPERcuLATAMenke, 1828
Reference: Synopsis methodica molluscorum: 22
Remarks: Established as order Coelopneumonata
operculata; latinization of "Pulmones
operculés" of Férussac (1822). Férussac
(1807: 37) had a family "Les Nériteins (sic)
ou Operculés" for ail land and freshwater
operculate gastropods.
Operculata P. Fischer, 1883
Reference: Manuel de conchyliologie et de
paléontologie conciiyliologigue, (5): 422,
512; (6): 551; (7): 653 [1884]; (9): 793 [1885]
Remarks: Name used for five different taxa of
gastropods: (1 ) as a subdivision of Pteropo-
da, including the family Hyollthidae only (p.
422); (2) as a division of Thalassophila including
the family Amphibolidae only (p.
512); (3) as a division of Cephalaspidea, including
the family Acteonidae only (p. 551 );
(4) as a subdivision of Taenioglossa including
the families Xenophohdae and Naricidae
(p. 653); (5) as a subdivision of Rhipidoglossa
including the families Helicinidae and
Hydrocenidae (p. 793).
Opisophthalma L. Pfeiffer, 1852
Reference: Monographia pneumonopomorum
viventium: 3
Remarks: Established as a suborder of Pneumonopoma,
including the family Aciculidae only.
Opisthobranchiata Milne-Edwards, 1846
Reference: Société Philomatique de Paris,
Extraits des Procés-Verbaux des Séances,
(1846): 116
Remarks: Original spelling (vernacular) "Opistobranches".
Also published in Milne-Edwards
(1846: 296). Latinized by Woodward
(1 854 [in 1851-1 855]: 1 79) as Opistho-bran-
chiata. Established as an order containing
the "Aplysiens", "Phyllidiens", "Doridiens",
and "Eolidiens". See also Bulliones.
Opisthophthalma Paladiihe, 1877
Reference: Annales des Sciences Naturelles,
ser. 6, Zoologie, 5: 1
Remarks: Established as a suborder of operculate
land snails, containing the genera
Truncatella, Geomelania, Acme, and Tomichia.
See also family Opisthophthalmidae.
Opisthopneumona Starobogatov, 1 970 [after 1
October]
Reference: Fauna molliuskov i zoogeograficheskoe
raionirovanie kontinentarnykh vodoemov
zemnogo shara: 45
Remarks: Established as a subclass containing
the orders Onchidiida, Rhodopida, and
Soleolifera.
OpiSTHOTREMATAWenz, 1923
Reference: Fossilum Catalogus, I, Pars 17:
206
Remarks: Division of the suborder Ditremata.
See family list.
Oriostomatoidei Golikov & Starobogatov,
1989
Reference: Trudy Zoologicheskogo Instituta,
187:71
Remarks: Established as a suborder contain-
ing the superfamily Oriostomatoidea only.
Orthoconcha Fol, 1875
Reference: Archives de Zoologie Expérimentale
et Générale, 4: 1 76
Remarks: Original spelling (vernacular) "Orthoconques";
established as a family and not
available as such (not based on a genus).
Latinized by RFischer(1883 [in 1880-1887]:
422) as a subdivision of Pteropoda Thecosomata,
containing the families Hyolithidae,
Pterothecidae, Conulariidae, and Cavolini-
idae.
ORTHODONTAMörch, 1857a
Reference: Fortegnelse over Grönlands Bloddyr.
88
Remarks: Established as an order including
the genera Pilidium, Lepeta, Tectura, Cemo-
ria, and Chiton.
Orthodonta Macdonald, 1881 [25 March]
Reference: The Journal of the Linnean Society
Zoology, 15: 243-244
Remarks: Name used for two different taxa of
gastropods: (1) as a suborder of the order
Proboscidifera, including the rachiglossan
neogastropod families (p. 243); (2) as a suborder
of the order Rostrifera including the
Heteropoda and the Phohdae (p. 244).
Orthogastropoda Ponder & Lindberg, 1995
[10 December]
Reference: Origin and evolutionary radiation
of the Mollusca: 145
Remarks: Established as a division of the
Gastropoda including all the gastropods except
the Eogastropoda.
Orthoneura Ihering, 1876
Reference: Jahrbücher der Deutschen Malakozoologlschen
Gesellschaft, 3: 140