EXPLANATION OF PLATE XXVI. 



1. Syperammina arbor escens (Norman), x 30 diam. 



2. Verneuilina polystropha (Rs.). dimorphous form, x 75 diam. 



3. Placopsilina cenomana, d'Orb. a, inferior aspect; b, superior aspect, 



x 40 diam. 



4. Miliolina insignis, Brady. «, lateral aspect ; b, oral aspect, x 75 diam. 



5. Miliolina subrotunda (Montagu), var. a, lateral aspect ; b, oral aspect. 



x 50 diam. 



6. Lagena semistriata, Will, x 75 diam. 



7. Lagena semilineata, Nov. x 75 diam. 



8. Lagena bicarinata (Terquem). a, lateral aspect ; b, oral aspect, x 100 diam. 



9. Lagena laevigata (Rs.), var. quadrata, Will, a, lateral aspect ; b, oral 



aspect, x 100 diam. 



10. Lagena marginata (W. & J.), var. incequilateralis, Nov. a, b, lateral 



aspects ; c, oral aspect, x 100 diam. 



11. Polymorphina gibba, d'Orb., flstulose form, x 20 diam. 



12. Spirillina margaritifera, Will, a, lateral aspect ; b, peripheral aspect, 



x 75 diam. 



