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Onchidiopsinae Golikov & Gulbin, 1990 [after
25 April]
Reference: Trudy Zoologicheskogo Instituía,
218:109
Type genus: Onctiidiopsis Bergh, 1853
Remarks: Not available: no diagnosis. Used, but
not diagnosed by Gulbin & Golikov (1 997: 44).
Onchidorididae Gray, 1827
Reference: Encyclopaedia metropolitana, Vol.
7. Plates to zoology: plate Mollusca
[= plate 3]
Type genus: Onc/7/dor/s Blainville, 1816
Remarks: Original spelling Onchidoridae. The
original spelling of the type genus is Onchidorus
(and this is also the spelling used by
Gray when he established Onchidoridae),
which has been consistently treated as an
incorrect original spelling. The spelling On-
chidoris, which dates from Blainville (1825:
489), has been universally used for more
than 1 50 years, -inae, Kobelt ( 1 879 [in 1 876-
1881]: 181 ); -oidea [as -acea], Abbott (1974:
361 ). See also Lamellidorididae.
Oncidiidae / Oncidiellidae. See Onchidiidae /
Onchidiellidae.
Oncomelaniidae Salisbury & Edwards, 1961
Reference: The Zoological Record, 95(9): 110
Type genus: Oncomelania Gredler, 1881
Remarks: Salisbury & Edwards cited the name
from a paper by Kang et al. (1 958), who however
merely use the expression "oncomela-
niid snails". Not available: no diagnosis.
Onobidae Golikov & Starobogatov, 1972
Reference: Opredeliteli Fauny Chernogo i
Azovskogo Morel, 3: 96
Type genus: Onoba H. Adams & A. Adams,
1852
Remarks: Not available (no diagnosis) from
Golikov & Scarlato (1 967: 33). Again declared
fam. nov. by Golikov & Starobogatov (1975:
211).
Onustidae H. Adams & A. Adams, 1 854 [April]
Reference: The genera of Recent Mollusca,
1:361
Type genus: Onustus Swainson, 1840
Onychochilidae Koken, 1925
Reference: Zaplskii Rossiskoi Akademii Nauk,
ser. 8, Otdel Fiziko-Mathematicheskikh
Nauk, 37 (^). 233
Type genus: -\Onychochilus Lindström, 1884
Remarks: -inae, Wenz (1938 [in 1938-1944]:
43,367).
BOUCHET&ROCROI
OocoRYTHiDAE R Fischer, 1885 [29 January]
Reference: Manuel de conchyliologie et de
paléontologie conchyliologique, (8): 769
Type genus: Oocorys P. Fischer, 1884
Remarks: -inae. Turner (1948: 181).
OoPELTiNAE Cockerell, 1891 [August]
Reference: Proceedings of the Zoological
Society of London ^on89^ (2): 216, 222
Type genus: Oopelta Mörch [in Heynemann],
1867
Remarks: -idae, H. Nordsieck (1986b: 99).
Opaliinae Cossmann, 1912 [August]
Reference: Essais de paléoconchologie comparée,
9: 19
Type genus: Opalia H. Adams & A. Adams,
1853
Opeatinae Thiele, 1931 [before 31 October]
Reference: Handbuch der systematischen
Weichtierkunde, 1(2): 552
Type genus: Opeas Albers, 1850
Operculaceae Hinds, 1845
Reference: The zoology of the voyage of H.
M. S. Sulphur, Vol. 2, Mollusca: 59
Remarks: Taxon including Pupina on\y. Established
as a family and not available as such
(not based on a genus).
Operculata Wiegmann & Ruthe, 1832
Reference: Handbuch der Zoologie: 527
Remarks: Taxon containing Cyclostoma and
Helicina. Established as a family and not
available as such (not based on a genus).
Operculatinae H. Adams & A. Adams, 1854
[October]
Reference: The genera of Recent Mollusca,
2:41
Type genus: Operculatum Mörch, 1852
Ophiletinae Koken, 1907 [after June]
Reference: [in Perner] Systeme Silurien du
Centre de la Bohême. Recherches Paléontologiques,
Vol. 4 [Gastéropodes] (2): 153
Type genus: -[Ophileta Vanuxem, 1842
Remarks: Established as subfamily of Euomphalidae
despite suffix -idae. Established
independently by Knight (1956: 42).
-idae, Morris & Cleevely (1981 :
R J. Wagner (2002: 70).
207); -oidea,
Ophthalmidae Bergh, 1905 [October]
Reference: Siboga Expeditie Monographie,
50:35
Remarks: Not available: not based on a genus.