240 THE FOEA^IINIFERA 



EXPLANATION OF PLATE 13. 



Fig. 



A, a. Fnsulina cijlindrica., Fischer : A, external and internal aspect, 



X 6 ; rt, transverse section, x 15. 



B, h. Schwagerina princeijs, Ehrenberg sp. (after Brady) : A, ex- 



ternal view, X lA ; h, transverse section of test, x 8. 



C, c. Nonioniitn iimbiUcdtttla, Montagu sp. (after Parker and 



Jones) : C, lateral aspect ; c, oral aspect, x 30. 



D. Polystomella macella, Fichtel and Moll sp. (after Brady), x 60. 



E, e. Faujasina carinata, D'Orbigny : E, inferior aspect (convex 

 siirface) ; <?, peripheral aspect. 



F, /. Archcediscus Kari'eri, Brady: F, periphero-lateral aspect ; /, 

 transverse section of test, x 20. 



G, g, g' . Amphistegina Lessonii, D'Orbigny : G, inferior lateral aspect, 

 showing the astral lobes ; g, superior lateral aspect, with 

 granulations near oral region, g', peripheral aspect. (After 

 Parker, Jones, and Brady.) x 55. 



H, h. Operculina ammonoides, Grono^ins sp. : H, lateral aspect ; h, 

 peripheral aspect, x 50. 



I, *, i'. Heterostegina depressa, D'Orbigny : I, lateral aspect of a full- 

 grown shell ; i, peripheral aspect, x 7 ; i\ young shell, 

 X 25. 



