122 THE FOEAMINIFERA 



Genus PHUDiniospluera, Schulze, 



Test a single globular chamber without any general 

 aperture, the pseudopoclia issuing from interstitial 

 orifices. ■Jura>i>iic to Recent. 



Example. — P.fiisca, Schulze, ' II. Jahresberichte 

 d. komm. Untersuch. d. Deutsch. Meere,' p. IIB, 

 pi. ii. fig. 8, (i,f. 



This little spherical foraminifer is normally free, 

 but is sometimes found attached to stones, or built 

 round sponge spicules. It is widely distributed, both 

 geographically and bathymetrically. It has also been 

 recorded as fossil from the Upper Jurassic of Switzer- 

 land, by Haeusler. Upper Jurassic and Becent. 

 (Plate 6, fig. A.) 



Genus BorosphcEra, Bbady. 



A number of gobular chambers adherent to each 

 other, without distinct stoloniferous tubes and with 

 no general aperture. Becent. 



Example. — S. confusa, Brady, ' Quart. Journ. 

 Micr. Sci.' vol. xxi. N.S. 1879, p. 98, pi. iv. figs. 

 18, 19. 



The walls of this species are thin and finely 

 arenaceous in texture, with minute interstitial ori- 

 fices. Diameter of the colony sometimes one-sixth 

 inch (4-5 mm.) It has been found in various parts 

 of the N. Atlantic from 542 to 900 fathoms, and in 

 the N. Pacific at 2,900 fathoms. Becent. (Plate G, 

 fig. B.) 



