EXPLANATION OF PLATES 

 Plate 1 



FiQUKE 1. Proteonina difflugiformis (H. B. Brady), X60. 



2. Olomospira gordialis (Jones and Parker), X60. 



3. Tolypammina vagans (H. B. Brady), X40. 



4a,l>. Hai^lGphragmoides canariensis (d'Orbigny), X60. a, Side view; 

 6, peripheral view. 

 5, 6. Quinquelooulina laevigata d'Orbigny. a, a, 6, 6, Opposite sides ; c, 

 apertural view. Fig. 5, X70. Fig. 6, X150. 



7 a-c. Quinqueloculina lamarcklana d'Orbigny, X40. a, b, Opposite sides; 



c, apertural view. 



8 a-c. Quinqueloculina costata d'Orbigny, X70. a, 6, Opposite sides; c, 



apertural view. 

 9 a-c. Quinqueloculina fusca H. B, Brady, X70. a, 6, Opposite sides; 

 G, apertural view. 



10 0-0. Quinqueloculina candeiana d'Orbigny, X70. c, 6, Opposite sides; c, 



apertural view. 



11 a-c. Quinqueloculina isabellei d'Orbigny, X40. a, 6, Opposite sides; c, 



apertural view. 



12 a-c. Triloculina circularis Bornemann, X 50. a, 6, Opposite sides ; o, aper- 



tural view. 

 13cf, &. Pyrgo subsphaerica (d'Orbigny), X50. o. Front view; 6, apertural 

 view. 



Plate 2 



I'lGTOE 1. Cornuspira involvens Reuss, X70. 



2 a-c. Quinqueloculina isabellei d'Orbigny, X40. o, &, Opposite sides; c, 

 apertural view. 

 3. Planispirina auriculata Egger, X70. 



4 o-c. Trochammina globigeriniformis (Parker and Jones), X60. a, Dor- 



sal view ; 6, ventral view ; c, peripheral view. 



5 a-c. Trochammlna rotaliformis J. Wright, X70. a, Dorsal view; b, ven- 



tral view; c, peripheral view. 

 6a,b. Nonion grateloupi (d'Orbigny), XIOO. a, Side view; 6, peripheral 



view. 

 7 a-c. Trochammina peruviana Cushman and Kellett, X150. a, Dorsal 



view ; b, ventral view ; c, peripheral view. 

 8a,b. Elphidium australis, new species, X60. a, Side view; b, peripheral 



view. 

 Sa, 6. Elphidium alvarezianum (d'Orbigny) serr«7a*ttm, new variety, X60. 

 a, Side view ; b, peripheral view. 



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