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Type genus: Theodoxus Montfou, 1810
Remarks: -ini, Bouchet, herein [for consistency
of ranking].
Therasiinae Schileyko, 2001 [June]
Reference: Treatise on Recent terrestrial pulmonate
molluscs, Part 7: 1012
Type genus: Therasia Hutton. 1883
Thersiteidae Savornin, 1915 [21 April]
Reference: Bulletin de la Société Géologique
de France, ser. 4, 14: 313
Type genus: -[Thersitea Coquand, 1862
ThiarinaeGíII, 1871 [February] (1823)
Reference: Smithsonian Miscellaneous Collections,
227: 8
Type genus: Thiara Röding, 1798
Remarks: Original spelling Tiarinae. Not available
from Troschel (1857 [in 1856-1891]:
1 1 2 [as Thiarae; a plural not equivalent to a
family-group name]). Although Gill treated
Melaniinae and Thiarinae as two subfamilies
of Melaniidae, Thiara and Melania Lamarck,
1 799, are objective synonyms; Thiaridae
is in prevailing usage, and is conserved under
Art. 40.2, with the precedence of Mela-
niidae. -idae, Suter (1 91 3: 235): -ini [as -eae].
Wenz (1939 [in 1938-1944]: 712).
Thliptodontidae Kwietniewski, 1902 [December]
(8 Dec. 1902)
Reference: Atti della Società Veneto-Trentina
di Scienze Naturali Residente in Padova, ser.
2, 4(2): 54
Type genus: Thiiptodon Boas, 1886
Remarks: Original spelling Thiiptodonidae.
Publication dated December 1902, to be taken
as 31 December 1902, and effectively
probably later. Thiiptodon and Pteroceanis are
synonyms, and Pteroceanidae Meisenheimer,
1 902 [8 December] is a senior synonym: how-
ever, Thliptodontidae is maintained under Art.
40.2, with the precedence of Pteroceanidae.
-inae, Pruvot-Fol (1926: 20).
THORUNNiNAEOdhner, 1926
Reference: Further zoological results of the
Swedish Antarctic Expedition 1901-1903,
2(1): 53
Type genus: Thorunna Bergh, 1878
Thycinae Thiele, 1929 [before 21 October]
Reference: Handbuch der systematischen
Weichtierkunde, 1(1): 246
Type genus: /? H. Adams & A. Adams, 1854
Remarks: -idae, Kikuchi et al. (1 996: 1 7).
NOMENCLÁTOR OF GASTROPOD FAMILIES 171
Thyrophorellidae Girard, 1 895 [December]
Reference: Jornal de Sciencias Mathematicas.
Physicas e Naturaes [Lisboa], ser. 2, 4: 31
Type genus: Thyrophorella Greef, 1882
Remarks: -oidea, Schileyko (1979a: 57).
Thysanodontinae Marshall. 1988 [14 June]
Reference: Journal of Molluscan Studies,
54(2): 215
Type genus: Thysanodonta MarshaW, 1988
Remarks: -idae, Golikov & Starobogatov
(1989:74).
Thysanophorinae Pilsbry. 1926 [5 August]
Reference: Proceedings of the Academy of
Natural Sciences of Philadelphia. 78: 107
Type genus: Thysanophora Strebel & Pfeffer, 1 879
Remarks: -idae. Franc (1968b: 589).
Thysanotinae Godwin-Austen, 1907 [April]
Reference: Land and freshwater Mollusca of
/nd/a, 2(10): 188
Type genus: r/?ysanoia Albers. 1860
TiARACERlTHIINAE Bouniol, 1981 [JunO]
Reference: Bulletin d'Information des Géologues
du Bassin de Paris, 18(2): 26
Type genus: -tTiaracerithium Sacco, 1895
TiBERiiNAE Saurin, 1958
Reference: Annales de la Faculté des Sciences
de Saigon, (1958): 64
Type genus: // Jeffreys, 1884
Remarks: -ini, Bouchet, herein [for consistency
of ranking].
TiBiiDAE Golikov & Starobogatov, 1975 [18
December]
Reference: Malacologia, 15(1): 211
Type genus: Tibia Röding, 1798
Remarks: Introduced, in violation of Art. 40.1
as a replacement name for Rostellariidae
Gabb, 1868, based on Rostellaria Lamarck,
1799, a junior synonym of 7"/b/a. Both Tibiidae
and Rostellariidae have had limited usage,
and Rostellariidae is the valid name
under the Principle of Priority.
TiNOSTOMATiNAE. See Teinostomatinae.
TiPHOBiiDAE Bourguignat, 1886 [July]
Reference: Bulletin de la Société Malacologique
de France, 3: 143
Type genus: Tiphobia E. A. Smith, 1880
Remarks: Original spelling Tiphobidae. Typho-
biidae [used by J. E. S. Moore, 1898: 202] is
an incorrect subsequent spelling based on