EOEAMINIEEEA EEOM THE NOETH ATLANTIC AND AECTIC OCEANS. 415 
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Fisr. 
25. 
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32. 
33. 
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' Polystomella arctica, Parker and Jones. 
Polystomella striatopunctata, Fichtel and Moll. 
Nonionina asterizans, Fichtel and Moll. 
Nonionina Faba, Fichtel and Moll. 
j.Nonionina Scapha, Fichtel and Moll. 
Nonionina depressula, Walker and Jacob. 
0 ’ ^'iNonionina stelligera, I)' Orbigny. 
a , , b.\ 
a, b. Nonionina umbilicatula, Montagu, 
a , b. Pullenia sphseroides, If Orbigny. 
a , b. Operculina ammonoides, Gronovius. 
a, b. Nummulina planulata, Lamarck. 
[Fi 
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Fig- 10, 
Fig. 11. 
Fig. 12. 
Fig. 15. 
Fig. 16. 
Fig. 17. 
PLATE XV. (ARCTIC FORAMINIFERA.) 
1-33, 36-41, 45-48 are magnified 24 diameters; figs. 34, 35, 42, 43, 44, 
12 diameters.] 
Cassidulina laevigata, D' Orbigny. 
Cassidulina crassa, If Orbigny. 
a j jBulimina Pyrula, If Orbigny. 
«, b. Bulimina marginata, If Orbigny. 
Bulimina aculeata, D' Orbigny. 
Bulimina elegantissima, If Orbigny. 
6 k 2 
