MIKROCONCHOECIA [Halocypris clausi Sars 1888,p.259,pl.ll, 
f.7-10;pl1.14,f.6-18] Claus [1890] 1891,p.22; 
189la,p.73,pl.e20 [Halocypridae-Conchoecinae by 
Claus; = Conchoecia by G. W. Miiller 1912,p.59; 
Halocypridae by Granata and Caporiacco 1949,p.lh, 
18] Recent, Mediterranean. 
MILLERATIA ([Beyrichia cincinnatiensis Miller 1875,p.350, 
fige25] Swartz 1936,p.567 [Primitiidae by Swartz; 
Primitiidae-?Primitiinae by Schmidt 1941,p.25; 
?Leperditellidae-?Eridoconchinae by Henningsmoen 
1953,p.e256,275] Upper Ordovician of Ohio. 
MILTONELLA [M. shupei] Sohn 1950,p.37 [Miltonellidae by Sohn] 
Permian of Texas. 
MILTONELLIDAE Sohn 1950,p.37, a family erected for the genus 
Miltonella; tentatively assigned to the Beyrichiacea 
by Henningsmoen 1953,pe273 because of its straight 
back. 
MIRACYTHERE [Me novaspecta] Hornibrook 1952,p.61 [Cytheridae-- 
Bythocytherinae by Hornibrook] Recent, New Zealand. 
MIROCHILINA [M. jarovensis] Bouéek 1936,p.51 [Primitiidae-- 
Eurychilininae by Bouéek; Beyrichiacea of uncertain 
family by Henningsmoen 1953,p.2h9,274] Silurian, 
Bohemiae 
121 
