REPORT ON THE RADIOLARIA. 75 



Dimensions. Diameter of the outer shell 0'24, inner 0'06, outer pores O'OOS to - 016, 

 bars 0-002. 



Habitat. South Atlantic, Station 325, surface. 



13. Carposphcera corypha, n. sp. 



Cortical shell thin walled, rough, three times as broad as the medullary shell, with irregular 

 polygonal pores, three to six times as broad as the bars. Connecting beams between the two shells 

 twenty, regularly disposed. 



Dimensions. Diameter of the outer shell 0'15, inner 0'05, outer pores O'Ol to 0'02, 

 bars 0-003. 



Habitat. South Pacific, Station 300, surface. 



14. Carposphcera borassus, n. sp. 



Cortical shell thick walled, smooth, three times as broad as the medullary shell, with irregular 

 polygonal pores, two to four times as broad as the bars. Connecting beams between the two shells 

 six, opposite by pairs in the three dimensive axes. (Similar to Hexalonche aristarchi, PI. 22, fig. 3, 

 but without external radial spines.) 



Dimensions. Diameter of the outer shell 0'12, inner 0'04, outer pores O'Ol to 0'02, bars 0'005. 



Habitat. Central Pacific, Station 268, surface. 



Subgenus 4. Phcenicosphcera, Haeckel. 

 Definition. Pores of the cortical shell irregular roundish, of unequal size or form. 



15. Carposphcera nobilis, Haeckel. 



Haliomma nobile, Ehrenberg, 1844, Monatsber. d. k. preuss. Akad. d. Wiss. Berlin, p. 268 ; 

 Abhandl., 1875, Taf. xxvii. fig. 6. 



Cortical shell thin walled, rough, twice as broad as the medullary shell, with irregular roundish 

 pores, two to four times as broad as the bars. 



Dimensions. Diameter of the outer shell 01, inner 0'05, outer pores O'Ol to 0'02, bars O'OOG. 



Habitat. Cosmopolitan ; Atlantic, Indian, Pacific, at various depths ; fossil in Jurassic, 

 Cretaceous, and Tertiary rocks. 



16. Carposphcera micrococcus, n. sp. 



Cortical shell thin walled, rough, seven times as broad as the medullary shell, with irregular 

 roundish pores, three to six times as broad as the bars. 



Dimensions. Diameter of the outer shell 0'2, inner 0'03, outer pores - 012 to 0'025, bars 

 0-004. 



Habitat. South Atlantic, Station 330, surface. 



