08 
On Paleozoic Bivalved Entemostraca. 
List of the Carboniferous Ostracoda of Russia. 
Beyrichia gibberosa, D Fichw. Sloboda. 
colliculus, D’ Hichw. Tschernischine. 
intermedia, Jones §& Holl. Tschernischine. 
Kirkbya anon (D’ Lichw.). Sloboda, 
striolata (D’ Fichw.). Sloboda. 
Primitia Eichwaldi, Jones §& Kirkby. Phillineonowa. 
Leperditia Okeni (Von Miinster). Phillineonowa, Sloboda. 
, var. inornata a): Tschernischine. 
, var. obliqua, J. § K. Phillineonowa. ; 
, var. microphthalma, D Eichw. Goroditz and Sloboda. 
Cythere (?) bilobata (Von Miinster). Tschernischine and Sloboda. 
Bairdia excisa (?), D’Hichw. Tschernischine and Sloboda. 
ampla, Ztewss, Sloboda *. 
Se Reuss, var. rhombica, Jones. Sloboda. 
, var. munda, J. & K. echericemie 
—— pqualis, D'Eichw. Sloboda. 
distracta, D’Fichw. (=P? mucronata, Reuss). Borowitschi and 
Goroditz. 
Qualeni, D’Eichw. Sterlitamak. 
Cytherella Murchisoniana, J. § K. Near Bugulina. 
EXPLANATION OF PLATE VI. 
[ All the figures, except fig. 12 6, are magnified 20 diameters. | 
Fig. 1. 
Fig. 2. 
Fig. 3. 
Fig. 4. 
Fig. 5. 
Fig. 6. 
Fig. 7. 
Leperditia Okeni (Von Miinster): right valve of small individual. 
Leperditia Okeni, var. inornata (M‘Coy): left valve. 
Leperditia Okent, var. obliqua, nov. : left valve. 
Bairdia equalis, D’Eichw.: a, right side; 6, dorsal; c, ventral 
edge; d, end view. 
Bairdia ampla, Reuss: a, right side; 6, ventral edge; c, end 
view. 
Bairdia plebeia, Reuss, var. rhombica, Jones: left valve. 
Bairdia plebeia, var. munda, noy.: left valve. 
Figs. 8 a, b, c, 9a, b, 10a, b,c. Cythere (Potamocypris ?) bilobata (Von 
Fig. 11. 
Fig. 12. 
Fig. 13. 
Fig. 14. 
Minster). Three individuals in various aspects. 
Beyrichia intermedia, Jones & Holl: left valve. 
Primitia Eichwaldi, sp. nov.: a, left valve, with wrinkled orna- 
ment; 5, ornament, from a " reticulated portion, magnified 84 
diameters. 
Cytherella Murchisoniana, sp. noy.: a, left valve ; 6, edge view. 
Cytherella Murchisoniana (cast) : a, right valve ; b, edge view ; 
ce, end view. 
* Under the heading “Batrdia curta” in ‘ Lethea Rossica,’ loc. cit., 
M. d’Eichwald gives Tschernischine, Goroditz, Borowitschi, and Sloboda 
as localities for at least three varieties, and he quotes it also from the 
‘Old Red Sandstone with Fucoids.”’ 
