EEPOET ON THE RADIOLARIA. 1339 



5. Podocyrtis corythceola, u. sp. (PI. 72, fig. 2). 



Shell ovate conical, with two deep strictures, and with rough surface. Length of the three joints 

 = 2:5:8, breadth = 3 : 8:10. Cephalis hemispherical, thorny, with a strong oblique horn three 

 times the length, which is armed with nine to twelve conical spines. Pores small, circular, of 

 irregular size and distribution. Feet spindle-shaped, divergent, as long as the inflated abdomen. 



Dimensions. — Length of the three feet, a 0-02, h 0-05, c 0-08 ; breadth, a O'OS, h 0-08, c 01. 



Habitat. — Indian Ocean, Maldive Islands (Haeckel), surface. 



6. Podocyrtis surena, n. sp. (PI. 72, fig. 10). 



Shell thin-walled, tower-shaped, smooth, with two deep strictures. Length of the three joints 

 = 2 : 5 : 10, breadth = 3 : 10 : 11. Cephalis subspherical, with a bent conical horn, as long as the 

 hemispherical thorax. Abdomen cylindrical. Pores subregular, circular, quincuncially disposed, and 

 sUghtly larger in the abdomen. Feet with a thickened calf, nearly perpendicular, as long as the 

 thorax ; their distal ends little divergent, and forming a knob beset witli small roundish tubercles. 



Dimensions. — Length of the three joints, a 0-02, b 0-05, c 01 ; breadth, a 0-035, b 01, c Oil. 



Habitat. — North Pacific, Station 241, depth 2300 fathoms. 



7. Podocyrtis conulus, n. sp. 



SheU elongate, conical, rougli, without external strictures, but with two internal septal rings. 

 Length of the three joints = 3 : 4 : 15, breadth = 5 : 7 : 12. Cephalis hemispherical, with a thick 

 pyramidal horn of the same length. Feet also pyramidal, divergent, of the same size as the horn. 

 Pores iiTCgidar, roundish, of variable size. Abdomen very long. 



Dimensions. — Length of the three joints, a 0-03, b 0-04, c 015 ; breadth, a 0-05, b 0-07, c 012. 



Habitat. — Tropical Atlantic, Station 342, depth 1445 fathoms ; also fossil in Barbados. 



8. Podocyrtis tridactyla, n. sp. 



Shell conical, with two slight strictures, smooth. Length of the three joints = 2:6:5, breadth 

 = 4:5:6. Cephalis hemispherical, with a pyramidal horn of twice the length. Pores irregular, 

 polygonal, of variable size. Feet as long as the abdomen, constricted in the middle, trilobed at the 

 distal end ; the middle lobe twice as large as the lateral lobes. 



Dimensions. — Length of the three joints, a 0-02, b 0-06, c 0-05 ; breadth, a 0-04, b 0-05, c O'OG. 



Habitat. — Indian Ocean, Madagascar; Eabbe. 



Subgenus 2. Podocyrtecium, Haeckel. 



Definition. — Feet divergent (the distance between their ends being greater than that 

 between their bases). Pores of the thorax and abdomen of difierent form or size. 



