REPORT ON THE RADIOLARIA. 1629 



5. Aidoscena verticillus, n. sp. (PI. 110, figs. 10, 11). 



Eadial tubes slender, cylindrical, twice as long as the smooth or somewhat thorny pyramidal 

 tubes, armed in the distal part with two or three irregular verticils of three to six perpendicular 

 spines, and on the distal end with a corona of twelve to eighteen straight, divergent, pointed, 

 terminal branches, which often arise in pairs. 



Dimensions. Diameter of the sphere 3'2 ; pyramidal tubes 015 long, O'Ol broad. 



Habitat. South Atlantic, Station 318, depth 2040 fathoms. 



6. Aidoscena penicillus, n. sp. (PI. 110, fig. 3). 



Eadial tubes slender, cylindrical, thorny, one and a half times as long as the thin and smooth 

 pyramidal tubes, armed in the distal half with densely crowded perpendicular spines and a terminal 

 corona of numerous (twenty to thirty or more) bristle-shaped branches, like a brush. 



Dimensions. Diameter of the sphere 2'0 to 2'5 ; radial tubes 015 to 0'2 long, 0'005 to O'Ol 

 broad. 



Habitat. Antarctic Ocean, Stations 156, 157, surface. 



7. Aidoscena flammdbunda, n. sp. (PI. 110, fig. 4). 



Eadial tubes cylindro-conical, twice as long as the thorny pyramidal tubes, studded with 

 numerous curved spines, and armed with a verticil or corona of numerous (twenty to thirty or more) 

 undulate, divergent, pointed, terminal branches. 



Dimensions. Diameter of the sphere 3'0 ; radial tubes 0'3 to 0'4 long, 0'02 to 0'03 broad. 



Habitat. North Pacific, Station 252, surface. 



8. Auloscena gigantea, n. sp. (PL 110, fig. 7). 



Eadial tubes cylindrical, thorny, about as long as the thorny pyramidal tubes, armed in the 

 distal half with four to eight verticils of short curved cilite, and at the distal end with a similar 

 small terminal verticil. 



Dimensions. Diameter of the sphere 5'2 ; pyramidal tubes 0'2 to 0'3 long, O'Ol broad. 



Habitat. Central Pacific, Stations 265 to 268, surface. 



9. Auloscena arboretum, n. sp. 



* 



Eadial tubes cylindrical, straight or slightly curved, about the same length as the smooth 

 pyramidal tubes ; armed in the distal half with three or four verticils, tapering in size towards the 

 distal end ; each verticil is composed of four crossed and curved branches, which bear a terminal 

 spinulate knob. (This species is very similar to Aulosphccra deiulrophora, PI. 109, fig. 1, and may 



