FORAMINIFERA OF THE ATLANTIC OCEAN. 105 



Plate 13. 

 Figs. 1-5. Psavtmosphaera fusca. Photogi-aphs of specimens composed of small black 

 rounded pebbles and light colored cement. X 15. 

 6. Psammosphaera fusca. X 15. Lartjer specimen attached to /M«6c?ammmff. 



Pl.\te 14. 

 Figs. 1-3. Pfammosphanu fusca.. X 15. Photograph.^ of .specimens composed of 

 fine material attached to Rhahdammina. 



Plate 15. • 



Figs. 1.2. Psammosphuera testacea. X 15. Photoi^aphs of specimens largely com- 

 posed of tests of PulvinuUna menardli. 

 3. Psainmosphaera testacea. X 20. Section showing the single layer of tests 

 and the central cavity. 

 4,5. Sorosphaera coiifusa. Photographs of irregular specimens. X 20. 

 t>-8. Storthosphaera albida. X 15. Photographs of exterior showing the irreg- 

 ular irests characteristic of this species. 



Plate 16. 



Figs. 1,2. Storthosphaera albida. X 20. Exterior views of especially strongly cervi- 

 corn specimens. (After Brady.) 



3. Storthosphaera albida. X 20. Specimen sectioned to show the wall and 



chamber cavity. (After Brady.) 



4. Saccammina sphaerica. X 15. Elongate fusiform specimen with two aper- 



tures. (After Brady.) 



5. Saccainmina sphaerica. X 15. Side view of specimen. (After Brady.) 



6. Technitclla vielo. X 50. a, side view; 6, apertural view. (After Brady.) 



7. Technitclla legumen. X 50. Side view. (After Brady.) 



8. Technitclla legumen. X 30. Side view of larger more regular specimen. 



(After Brady.) 



Plate 17. 



Fig. 1. Rhaphidoscene conica. Specimen attached to ^o<c//ma. Copy of typo figure, 

 a, b, front and side views. (After Vaughan-Jennings.) 



Plate 18. 



Fig. 1. Storlhospiiaera elowjala. X 15. Photograph of exterior of specimen. 



2. Storthosphaera elongata. X 15. Sectioned specimen shomng thick matted 

 wall and central chamber cavity. 



Plate 19. 



Fig. 1. Storthosphaera elongata. X 15. Photogi-aph of shorter .specimen. 



2-5. Saccammitin sphaerica. X 15. Photographs of spherical specimens with 



large circular apertures referred to this species. 

 <J. 7. Proteonina micacea. Photographs of specimens composed of mica s(!ales. 

 S. Lagenaiiiinina lagunculo. X 25. Figures of specimens. (After Rhumbler.) 



Plate 20. 



Fi(;s. I 4. I'roteonina testacea. X 15. Photographs of specimens composed of tests 

 of Pulvlnulina and Globigerina with abundant cement. 



5. Saccammina minula. X 25. Figure after Rhumbler. 



6. Proteonina helenae. X 75. Specimen composed of fragments of tests of 



Globigerina and other foraminifera. (After Rhumbler.) 



7. Proteonina helenae. X 75. Specimen by transmitted light composed 



largely of entire tests of olh'T foraminifera. (After Rlutnibler.) 



20173—18 8 



