REPORT ON THE RADIOLARIA. 1149 



columella, simple, three-sided prismatic. Feet twice as long, widely divergent, straight, prismatic, 

 with some irregular basal branches. 



Dimensions. Shell O06 diameter, horn O'Oo long, feet 01 long. 



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



2. Cladoscenium ancoratum, n. sp. (PI. 53, fig. 13). 



Shell campanulate, smooth, with irregular polygonal pores. Basal plate with six pores (two 

 large cardinal, two smaller jugular and two still smaller cervical pores). Columella with a single 

 verticil of three ascending lateral branches (by mistake not distinct in the figure). Apical horn 

 and the three feet of the same form and size, slender, prismatic, twice to three times as long as the 

 shell, straight, in the distal half with three slender recurved branches, anchor-shaped. 



Dimensions. Shell 0'05 long, 0'04 broad ; horn and feet 01 to 015 long. 



Habitat. Central Pacific, Station 274, depth 2750 fathoms. 



3. Cladoscenium gladiatum, n. sp. 



Shell subspherical, with irregular polygonal pores. Basal plate with three large pores. 

 Columella with two verticils of three ascending lateral branches. Apical horn as long as the 

 columella, three-sided prismatic. Feet of the same form, twice as long, in the distal half with two 

 opposite transverse branches, sword-shaped. 



Dimensions. Shell O'Oo long, 0'06 broad ; horn 0'04 long, feet 01 long. 



Habitat. Western Tropical Pacific, Station 225, depth 4475 fathoms. 



4. Cladoscenium pinnatum, n. sp. 



Shell campanulate, with irregular polygonal pores. Basal plate with four pores (two major 

 cardinal and two minor jugular). Columella with two verticils of three ascending lateral branches, 

 and prolonged into a slender prismatic apical horn of twice the length, which bears four such 

 verticils. Feet twice as long as the horn, pinnate, each with four or five pairs of opposite lateral 

 branches, decreasing towards the thin distal end. 



Dimensions. Shell 0'06 long, 0'05 broad ; horn 01 long, feet 0'2 long. 



Habitat. Tropical Atlantic, Station 347, depth 2250 fathoms. 



5. Cladoscenium verticillatum, n. sp. 



Shell campanulate, with subregular square pores. Basal plate with nine pores (three larger 

 central and six smaller distal). Columella with three verticils of three ascending lateral branches. 

 Apical horn and the three basal feet of equal size and similar form, four to six times as long as the 

 columella, three-sided prismatic, each with four to five verticils of three lateral branches, which are 



