REPORT ON THE RADIOLARIA. 105 



3. SiphonosphcBra Uibulosa, J. Miiller (PI. 6, fig. 4). 



SipJionosphcera tuhalom, J. Miiller, 1858, Ablnindl. d. k. Akad. d. Wiss. Berlin, p. 59. 

 Siphonosphctra tuhiduna, Haeckel, 1862, Jlonogr. d. Radiol., p. 532. 

 CoUospItmra tubuloea, J. Muller, 1858, Abhandl. d. k. Akad. d. Wiss. Berlin, p. 59. 

 TJiaJassirolla jvmctata, var., Husley, 1851, Ann, and Mai,'. Nat. Hist., ser. 2, vol. viii. p. 435, 

 pi. xvL fig. 5. 



Shell subspherical or rouudish, somewhat irregular, occupied by a small number (five to ten) of 

 short cylindrical tubules, irregularly scattered at great distances ; intervals between the tubules very 

 large, two to four times as broad as the length of the tubules, which is equal to their breadth and 

 about one-fifth or one-sixth of the shell diameter. Only two or three tubules in the half meridian 

 of the shell. 



Dimensions. — Diameter of the .shell 0'12 to 015, length and breadth of the tubules 0'02 to O'O.".. 



Habitat. — Equatorial zone of the Pacific, Stations 225, 265, 268, surface. 



4. SiphonosphcBra cyathina, n. sj). (PL 6, fig. 10). 



Shell a regular sphere, everywhere occupied by short cup-like tubules of somewhat different 

 size. In the half meridian of the shell about ten to twelve tubules, nearly cylindrical, but con- 

 stricted in the middle. Inner and outer aperture of the tubule of the same size ; their diameter 

 ecpial to their length and distance. 



Dimensions. — Diameter of the shell 01 to 012, length and breadth of the tubules 0-005 to 0-01. 



Habitat.— West coast of Tropical Africa, Stations 348 to 352, surface. 



5. SiphonosphcBra patinaria, n. sp. (PL 6, figs. 7, 8). 



Shell a regular or subregular sphere, occupied by numerous broad cup-like tubules of very 

 different sizes. In the half meridian of the shell about six to eight tubules, very flat, circular or 

 subcircular, much constricted in the middle. Diameter of the inner aperture larger than that of the 

 middle stricture, smaller than that of the outer aperture of the tubule ; outer diameter two to four 

 times as great as their length. 



Dimensions. — Diameter of the shell 01 to 015, of the pores O'Ol tn O^Ol ; length of the tubules 

 0-01, breadth 0-02 to 0-04. 



Habitat. — -Tropical Atlantic, Station 348, depth 2450 fathoms. 



6. SiphonosphcBra infundibuluin, n. sp. 



Shell subspherical or irregular rounded, occupied by a small number (six to twelve) of large 

 funnel-like tubules of very different size, scattered irregularly at great distances. Intervals 

 between the tubules larger than their length, which surpasses the radius of the shell. Outer open- 

 lag of the funnels three to four times as broad as the inner. 



Dimensions. — Diameter of the shell 015 ; length of the tubules 0'05 to 0-09. 



Habitat. — South Atlantic, Station 332, depth 2200 fathoms. 



(ZOOL. CHALL. EXP. — PART XL. — 1885.) , Rr 14 



