REPORT ON THE RADIOLARIA. 155 



10. Staurosphcera thomce. 



Shell thick walled, with regular, circular pores, twice as broad as the bars ; twelve to fourteen on 

 the quadrant ; surface covered with short conical by-spines. Four main spines conical, twice as long 

 as the radius, twice as broad as one mesh. 



Dimensions. — Diameter of the sphere 0'2, pores 0'012, bars O^OOG. 



Habitat. — South Atlantic, Station 3.32, depth, 2200 fathoms. 



Subgenus 3. StaurospJicBrissa, Haeckel. 

 Dtifinition. — Pores irregular, of difierent size or form ; surface smooth. 



11. Staurosplicera judce, u. sp. 



Shell thin waUed, smooth, with irregular, polygonal pores, twice to four times as broad as the 

 bars ; six to ten on the quadrant. Four main spines three-sided pyramidal, as long as the 

 radius. 



Dimensions. — Diameter of the sphere OlS, pores 0-006 to 0-012, bars 0-003. 



Habitat. — Central Pacific, Station 273, depth, 2350 fathoms. 



12. StaurosphcBra crassa, Dunikowski. 



Staurosphwra crassa, 18S2, Denkschr. d. k. Akad. d. Wiss. Wien, Bd. xlv. p. 27, Taf. v. figs. 52-55. 



Shell thick waUed, smooth, with u-regular, roundish pores, scarcely broader than the bars ; eight 

 to ten on the quadrant. Four spines three-sided pyramidal, nearly as long as the shell cUameter. 

 DimcTisions. — Diameter of the sphere 0-19, pores and bars 0-015. 

 Habitat. — Fossil in the Alpine Lias (Schafberg near Salzburg, Dunikowski). 



13. Staurosphcera apostolorum, Haeckel. 



? Cenosj}haira mer/apora, Ehrenberg, 1875, Abhandl. d. k. Akad. d. Wiss. Berlin, p. 66, Taf. iii. 



fig. 1. 

 1 Ceiwsphara mkropora, Ehrenberg, 1875, Abhandl. d. k. Akad. d. Wiss. Berlin, p. 66, Taf. iii. 

 fig. 2. 



Shell thin waUed, smooth, with large, irregular, roundish pores, twice to six times as broad as the 

 bars ; four to six on the quadrant. Four spines conical, very stout, about as long as the shell 

 diameter, often more or less irregularly disposed. 



Dimensions. — Diameter of the sphere 0-12 to 0-2, pores 0-01 to O'OS, bars 0-005. 



Habitat. — Fossil in Barbados. 



