REPORT ON THE RADIOLARIA. 1277 



15. Anthocyrtium ehreiibergii, Haeckel. 



Ardhocyrtis ehrenhergii, Stbhr, 1880, Palaeontogr., vol. xxvi. \>. 100, Taf. iii. fig. 21, a, h. 



Shell smooth, with obliterated collar stricture. Length of the two joints = 3 : 10. 

 breadth = 2 : 8. Cephalis subcylindrical, with an excentric, stout, pyramidal horn of the same 

 length. Thorax bottle-shaped, with small, regular, circular pores of equal size, ilouth little 

 constricted, with twenty to thirty small, triangular, convergent feet, about half as long as the 

 cephalis. 



Dimensions. — Cephalis 0"03 long, 0"02 broad ; thorax 0"1 long, 0'08 broad. 



Habitat. — Fossil in Tertiary i-ocks of Sicily (Grotte), Stohr. 



16. Aiithocyrtium zangueharicum, Jla,eckel. 



Anthocijrtis zangueharica, Ehrenberg, 1872, Abhandl. d. k. Akad. d. "Wiss. Berlin, p. 285, 

 Taf. ix. fig. 12. 



Shell smooth, with slight collar stricture. Length of the two joints =3 : 10, breadth = 2 : 7. 

 Cephalis subspherical, with an excentric conical horn of the same length. Thorax slender, ovate 

 or bottle-shaped, with irregular, roundish pores increasing in size downwards. Mouth little con- 

 stricted, with twelve to fifteen small, triangular, convergent feet, about half as long as the cephalis. 



Dimensions. — Cephalis 0'03 long, 0'02 broad ; thorax O'l long, 0'07 broad. 



Habitat. — Indian Ocean (Zanzibar), depth 2200 fathoms, Pullen. 



17. Anthocyrtium Jicus, Haeckel. 



Anthocyrtis ficus, Ehrenberg, 1875, Abhandl. J. k. Akad. d. Wiss. Berlin, p. 64, Taf. vi. fig. 3. 



Shell rough, with obliterated collar stricture. Length of the two joints = 2 : 12, breadth =3 : 10. 

 Cephalis conical, with a large, cylindrical horn, pyramidal at the base, about as long as the thorax. 

 Thorax subovate, truncate, papillate, with small, regular, circular, quincuncial pores of the same 

 breadth as the bars. Mouth constricted, two-thirds as broad as the thorax, with fifteen to twentv 

 strongly convergent, lamellar, rectangular or sword-shaped feet, nearly as long as the thorax. 



DinunsioTis. — Cephalis 0"02 long, 0'03 broad ; thorax 0'12 long, 01 broad. 



Habitat. — FossU in Barl^ados. 



18. Anthocyrtium Jlosculus, n. sp. (PL 62, fig. 19). 



Anthocyrtis flosculus, Haeckel, 1881, Prodromus et Atlas, pi. Ixii fig. 19. 



Shell ribbed, with distinct collar stricture. Length of the two joints = 1:4, breadth = 2:4. 

 Cephalis hemispherical, with small, circular pores and a large cylindrical horn, twice as long as 

 the thorax and half as broad at the base as the cephalis. Thorax subovate, truncate, with twenty- 

 four to thirty longitudinal ribs and alternating rows of circular pores. Mouth constricted, two-thirds 



