Plate 29 



Fig. 1. Pyrulina velascoensis (Cushman). X 65. Cretaceous, Velasco shale, 

 Hacienda El Limon, west of Panuco, Mexico, a-c, side views. 

 2. Pseudopolymorphina subnodosa (Reuss). (After Reuss.) 

 3-5. Pseudopolymorphina incerta (Egger). X 45. Miocene, Burdigalien infe- 

 rieur, Le Coquillat, Leognan, France, a, side view; b, basal view. 



6. Pseudopolymorphina ovalis Cushman and Ozawa. X 35. Miocene, Tor- 



tonian, Amphistegina marl, Grunes Kreuz, Nussdorf, near Vienna, Aus- 

 tria, a, b, side views; c, basal view. 



7. Polymorphina burdigalensis d'Orbigny. X 45. Miocene, Burdigalien 



inferieur, Moulin de I'Eglise, Saucats, France, a, b, side views; c, basal 

 view. 



8. Polymorphina fornasinii Cushman and Ozawa. X 40. Recent, off Tri- 



poli, a, side view; b, outline of end view. 



9. Polymorphina incavata Stache. X 15. (After Stache.) a, side view; 



b, apertural view. 

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