REPORT ON THE RADIOLARIA. 1611 



of the network. The distal end of the radial spines bears an elegant, foliate, terminal knob, com- 

 posed of four to six vertical pinnate leaves, lying in crossed meridional planes. 



IHmensimis. — Diameter of the sphere 2 to 3, length of the rods 01 to 0'2, breadth 0'003 to 

 0-01. 



Hah'itat. — Antarctic Ocean, Station 156, depth 1975 fathoms. 



3. Sagenoscena penicillata, n. sp. (PI. 108, fig. 10). 



Pyramids rather regular, usually six-sided (intermingled with single five-sided, seven-sided, and 

 eight-sided forms) ; their axial rod and apical spine spindle-shaped, thicker than the smooth bars 

 of the network. The distal end of the radial spines is penicUlate and bears a brush of bristle- 

 shaped, radial, terminal spinules (compare Sagosphccra iKnicilla,'^. 1607). 



Dimensions. — Diameter of the sphere 1 to 1'5, length of the bars 0"1 to 0'15, breadth 0'004 to 

 0-005. 



Habitat. — Antarctic Ocean, Station 157, depth 1950 fathoms. 



4. Sagenoscena coronata, n. sp. 



Pyramids rather regular, usually four-sided (intermingled with single five-sided and six-sided 

 forms) ; their axial rod and apical spines cylindrical, scarcely thicker than the smooth bars of the 

 network. The distal end of the radial spines bears a corona of twenty to thirty curved terminal 

 branches, which form a regiilar circle, and are armed with a spinulate terminal knob. 



Dimensions. — Diameter of the sphere 2 to 3, length of the bars 0'12 to 0'18, breadth 0'004 to 

 0-008. 



Habitat. — North Pacific, Station 256, surface. 



5. Sagenoscena spathillata, n. sp. 



Pyramids more or less irregular, of different sizes and various forms, each composed of four to 

 eight convergent rods and a central axial rod. The latter is prolonged into a free apical spine, 

 which bears at the distal end a spathUla of eight to twelve recurved teeth, and often beyond it a 

 second similar verticU. 



Dimensions. — Diameter of the sphere 4-0, length of the bars O'l to 0-2, breadth 0-002. 



Habitat. — ^Arctic Ocean, Greenland (Olrik). 



6. Sagenoscena cruciata, n. sp. 



Pyramids very irregidar, of different sizes and various forms, each composed of six to nine 

 convergent rods and a central axial rod. The latter is prolonged into a free apical spine, which 

 bears three to five cruciate verticils, each composed of four perpendicularly crossed lateral branches 

 which bear at the distal end a spinulate knob (similar to Sagviidium cnicicorne, PI. 108, fig. 9). 



Dimensions. — Diameter of the sphere 1-0 to 1-2, length of the bars 0-06 to 0-09, breadth 0-001. 



Habitat. — Central Pacific, Station 266, depth 2750 fathoms. 



