REPORT ON THE RADIOLARTA. 1027 



circle of very small pores. The other lattice-work with numerous small roundish pores. Apical 

 horn small, oblique, about as long as the shell. Three feet very large, cylindrical, curved, widely 

 divergent, four to five times as long as the shell. (In Ehrenberg's description the caudal foot is 

 erroneously described as " frontal spine " ; its figure exhibits the basal plate.) 



Dimensions. Shell - 07 to 0'09 diameter ; horn 0'06 long, feet 0'3 to 0'4 long. 



Habitat. Fossil in Tertiary rocks of Barbados. 



6. Tripospyris conifera, n. sp. (PI. 84, figs. 7, 7a). 



Shell nearly hemispherical, papillate, with slight sagittal stricture and semicircular internal ring. 

 Basal plate with three large pores (sometimes, as in the figured specimen, with some small 

 accessory peripheral pores). The other lattice-work with subregular circular pores. Apical horn 

 shorter than the three basal feet, but of similar form, like an elegant ovate dimpled cone, spinulate, 

 with a smooth spindle-shaped pedicle, about as long as the shell. 



Dimensions. Shell O08 long, 01 broad ; horn 0'06 long, feet 0'08 long. 



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



7. Tripospyris triplecta, n. sp. (PI. 95, fig. 2). 



Shell thorax-shaped, spiny, with deep sagittal stricture and semicircular internal ring. Basal 

 plate with three large collar pores. Facial plate with four pairs, occipital plate with three pairs 

 of large annular pores ; the other pores small, subregular, circular. Apical horn and the feet 

 slender, three -sided pyramidal, about as long as the shell. 



Dimensions. Shell 01 long, Oil broad ; horn and feet 01 to 015 broad. 



Habitat. Mediterranean, Corfu (Haeckel), surface. 



Subgenus 3. Tripospyrissa, Haeckel. 



Definition. Basal plate with two pairs of collar pores (two larger posterior cardinal 

 pores and two smaller anterior jugular pores). 



8. Tripospyris semantrum, n. sp. (PL 95, fig. 3). 



Shell thorax-shaped, thorny, with deep sagittal stricture and subcircular ring. Basal plate 

 with four large collar pores (two smaller ovate jugular, and two larger pentagonal cardinal pores). 

 Facial and occipital plates also each with two pairs of large annular pores ; lateral sides with 

 smaller irregular polygonal pores. Apical horn and the three feet slender, prismatic, divergent, 

 longer than the shell. 



Dimensions. Shell 0'07 long, 0'08 broad; horn and feet Oil to 013 long. 



Habitat. South Atlantic, Cape of Good Hope (Wilhelrn Bleek), surface. 





