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Type genus: Megalomastoma Swainson, 1840
Remarks: Original spelling Megalomastomi-
nae. -ini [as -eae], Kobelt (1902: 231 ,
BOUCHET&ROCROI
261 );
-idae, Golikov & Starobogatov (1975: 210).
Megalophaedusini Zilch, 1 954 [1 5 April]
Reference: Archiv für Molluskenkunde, 83(1-
3):3
Type genus: Megalophaedusa O. Boettger,
1877
Remarks: Original spelling (tribe) Megalophaeduseae.
Name only, no diagnosis. First diagnosed
by Zilch (1959 [in 1959-1960]:
379). -inae,Abbott (1989: 215).
Megalostominae Jousseaume, 1894
Reference: Mémoires de la Société
Zoologique de France, 7: 309
Remarks: Taxon containing the genera Cataulus
and Nicida. Not available (not based
on a genus).
Megaspiridae Pilsbry, 1904 [8 January]
Reference: Manual of Conchology, ser. 2,
16(63): 175
Type genus: Megaspira Lea, 1838
MEGASYSTROPHINAETryOn, 1871
Reference: A monograph of the fresh-water
univalve Mollusca of the United States, part
2: 83-84
Type genus: Megasystropha I. Lea, 1864
Remarks: Original spelling Megasistrophinae.
Invalid: type genus placed on the Official
Index by Opinion 432 (1956: 373).
Megomphicinae H. B. Baker, 1 930 [1 5 January]
Reference: The Nautilus, 43{3. 100
Type genus: Megomphix H. B. Baker, 1930
Remarks: -idae, H. Nordsieck (1986b: 99). See
Polygyrellinae.
Meisenheimeriinae Hoffmann, 1925
Reference: Jenaische Zeitschrift für Naturwissenschaft,
61(1-2): 220
Type genus: Meisenheimeria Grimpe & Hoffmann,
1924
Remarks: See Pseudoveronicellinae.
Melampidae Stimpson, 1851 (1850)
Reference: Shells of New England. A revision
of the synonymy of the testaceous mollusks
of New England: 51
Type genus: Melampus Montfort, 1810
Remarks: Cowie (1998: 41) gave reasons for
using the spelling Melampodinae, and noted
that "the issue may require a ruling from
the ICZN"; his suggestion is not followed here,
as the matter is controversial and Melampinae
appears to be in prevailing usage, -inae,
Pfeiffer (1853b: 8); -oidea [as -acea], Abbott
(1974: 331). When he established Melampidae,
Stimpson did not cite Conovulidae;
however, Melampus and Conovulus are objective
synonyms, and Melampidae is maintained
under Art. 40.2, with the precedence
of Conovulidae.
Melanatriinae Thiele, 1921 [12 July]
Reference: Archiv für Molluskenkunde, 53(3):
142
Type genus: -tMelanatria Bowdich, 1822
Remarks: -idae, Volkova et al. (in Pchelintsev
& Korobkov, 1960: 166); -oidea, Starobogatov
(in Starobogatov & Izzatullaev,
1980:25).
Melanellidae Iredale, 1915 [1 July]
Reference: Journal of Conchology, 14(11): 344
Type genus: Melanella Bowdich, 1822
Remarks: Established as a substitute name
for Eulimidae, because Melanella is an old-
er name than, and according to Iredale perhaps
a synonym of, Eullma Risso, 1826.
Melanellidae has not gained general acceptance
over Eulimidae and Art. 40.2 does not
apply, -oidea [as -acea], Taylor & Sohl (1 962:
10,20).
Melaniidae Children, 1823 [July]
Reference: Quarterly Journal of Science, Literature
& Arts, 15:243
Type genus: Melania Lamarck, 1799
Remarks: Original spelling Melaniana; latini-
zation of "les Mélaniens" (vernacular), first
established by Lamarck (1812: 116). -inae
[as Melanianae], Swainson (1840: 340);
-oidea [as -acea], Cossmann (1909: 121).
Melaniidae has been replaced by Thiaridae
and, under Art. 40.2, gives its precedence
to the replacement name. If the name Mela-
niidae was attributed to Lamarck (1812),
Thiaridae would then have precedence over
Cerithiidae Fleming, 1822, and this would
change the name of the superfamily. Nomenclature
is best stabilized by attributing Melaniidae
to Children (1823) who was
responsible for its first publication as a Latin
name.
Melanioptyxinae Lyssenko, 1984
Reference: lurskle i melovye Nerinei luga
SSSR i ikh stratigraficheskoe znachenie: 1
Type genus: t/We/an/opiyx/s Cossmann, 1896