16 PROCEEDINGS OF THE NATIONAL MUSEUM VOL.75 



10 a, b. Elphidium species. X65. a, side view; b, peripheral view. 



11 a, 6. Bulimina patagonica. X95. a, b, opposite sides. 



12 a, b. Buliminella elegantissima. X95. a, b, opposite sides. 



Plate 4 



Figs. 1 a-c. Bulimina patagonica, variety glabra. X95. o, b, opposite sides; c, 

 apertural view. 



2 a, h. Virgulina schreibersiana. X95. a, b, opposite sides. 



3 o, b. Bolivina doniezi, new species. X95. a, front view; b, apertural 



view. 



A a,b. Bolivina subcxcavata, new species. X95. a, front view; 6, apertural 

 view. 

 5. Bolivina cf. karreriana, variety carinata. X95. 



6 a-c. Loxostomum cf, mayori. X65. a, b, opposite sides; c, apertural 



view. 



7 a-d. Angulogerina carinata. X95. a-c, vieWs from different sides; d, 



apertural view. 



8 a-c. Uvigeritia virgulinoides, new species. X150. a, b, opposite sides; 



c. apertural view. 



9 a, b. Spirillina vivipara, variety. X150. a, b, opposite sides. 



10 a-c. Patellina advena. X95. a, dorsal view; b, ventral view; c, side 



view. 



Plate 5 



Figs. 1 a-c. Spirillina spinigera, variety. X95. a, c, opposite sides; b, pe- 

 ripheral view. 

 2-4. Tretomphalus bidloides. X95. 2a, dorsal view; 26, ventral view of 

 young specimen. 3, peripheral view. 4a, dorsal view; 46, side 

 view of adult. 



5 a-c. Cassidulina crassa. X95. a, 6, opposite sides; c, peripheral view. 



6 a-c. Globigerina conglomerata. X95. a, dorsal view; 6, ventral view; c, 



peripheral view. 



7 a-c. Globigerina species. X150. «, ventral view; 6, peripheral view; c, 



dorsal view. 



8 a-c. Globigerina inflata. X50. a, dorsal view; 6, ventral view; c, peri- 



pheral view. 



Plate 6 



Figs. 1 a-c. Globigerina triloba. X50. a, peripheral view; b, dorsal view; c, 

 ventral view. 



2 a-c. Globorotalia menardii. X50. a, ventral view; b, peripheral view; 



c, dorsal view. 



3 a-c. Globorotalia truncattdinoides. X65. a, ventral view; b, peripheral 



view; c, dorsal view. 



4 a-c. Cibicides species. X45. a, peripheral view; b, ventral view; c, 



dorsal view. 



5 a-c. Anomalina schmitti, new species. X95. a, ventral view; b, dorsal 



view; c, peripheral view. 



6 a-c. Anomalina (?) species. X95. a, c, opposite sides; b, peripheral 



view. 



7 a, b. Anomalina cf. grosser iigosa. X50. a, peripheral view; b, dorsal 



view. 



8 a-c. Cibicides species. X45. a, dorsal view; b, ventral view; c, pe- 



ripheral view. 



9 a-c. Anomalina coronata. X95. a, b, opposite sides; c, peripheral view. 



o 



