PLATE XVI 



Rotalia clathrata, Brady (No. 395). Dorsal view of large specimen: x 48. 



Rotalia clathrata, Brady (No. 395). Ventral view of normal specimen: x 48. 



Rotalia clathrata, Brady (No. 395). Dorsal view of normal specimen: x 48. 



Rotalia clathrata, Brady (No. 395). Edge view of normal specimen: x 48. 



Nonion incrassatum (Fichtel and Moll) (No. 398). Side view: x 64. 



Nonion incrassatum (Fichtel and Moll) (No. 398). Front-edge view: x 64. 



Nonion sloanii (d'Orbigny) (No. 403). Side view: x 64. 



Nonion sloanii (d'Orbigny) (No. 403). Front-edge view: x 64. 



Nonion grateloupi (d'Orbigny) (No. 406). Front-edge view: x 64. 



Nonion gratelotipi {d'Orbigny) (No. 406). Side view: x 64. 



Nonionella chiliensis (?) Cushman and Kellett (No. 411). Dorsal view: x 74. 



Notiionella chiliensis (?) Cushman and Kellett (No. 411). Ventral view: x 74. 



Nonionella chiliensis (?) Cushman and Kellett (No. 411). Edge view: x 74. The 



final chamber is broken away. 



Note. The final chamber is broken and the surface eroded. 



Nonionella iridea, sp.n. (No. 410). Dorsal view: x 74. 



Nonionella iridea, sp.n. (No. 410). Ventral view: x 74. 



Nonionella iridea, sp.n. (No. 410). Front-edge view: x 74. 



Nonionella auris (d'Orbigny) (No. 409). Ventral view: x 74. 



Nonionella auris (d'Orbigny) (No. 409). Dorsal view: x 74. 



Nonionella auris (d'Orbigny) (No. 409). Front-edge view: x 74. 



Elphidium incertum (Williamson) (No. 412). Side view: x 64. 



Elphidium incertum (Williamson) (No. 412). Front-edge view: x 64. 

 Fig. 22. Elphidium excavatum (Terquem) (No. 413). Side view: x 64. 

 Fig. 23. Elphidium excavatum (Terquem) (No. 413). Front-edge view: x 64. 

 Fig. 24. Elphidium alvarezianum (d'Orbigny) (No. 415). Side view: x 64. 

 Fig. 25. Elphidium alvarezianum (d'Orbigny) (No. 415). Front-edge view: x 64. 

 Figs. 26, 27. Elphidium magellanicum, sp.n. (No. 416). Side views: x 64. 

 Fig. 28. Elphidium magellanicum, sp.n. (No. 416). Front-edge view: x 64. 

 Fig. 29. Elphidium lessonii (d'Orbigny) (No. 417). Side views: x 64. 

 Fig. 30. Elphidium lessonii (d'Orbigny) (No. 417). Front-edge views: x 64. 

 Fig. 31. Elphidium owenianum (d'Orbigny) (No. 419). Side view: x 64. 

 Fig. 32. Elphidium ozveniajium (d'Orbigny) (No. 419). Front-edge view: x 64. 

 Figs. 33, 34, 36. Dendronina papillata (Heron-Allen and Earland) (No. 59). Specimens in 



secondary stage of grovrth showing development of tubular outgrowth: x 28. 

 Fig. 35. Dendronina papillata (No. 59). A detached basal pad seen from below, showing 



branching " astrorhizid " primordial chamber: x 28. 

 Figs. 37, 38. Dendronina papillata (No. 59). Detached fragments believed to represent 



the terminal chamber of the organism : x 28. 

 Fig. 39. Technitella nitida, sp.n. (No. 62). x 28. 



