REPORT ON THE RADIOLARIA. 1275 



9. Anthocyrtium leptostylum, Haeckel. 



Anthocyrtis leptostyla, Ehrenberg, 1875, Abhandl. d. k. Akad. d. Wiss. Berlin, p. 64, Taf. vi. 

 fig. 1. 



Shell thorny, with slight collar stricture. Length of the two joints = 1 : 5, breadth = 2 : 4. 

 Cephalis hemispherical, with small, scarce pores and a slender conical horn of the same length. 

 Thorax spiny, with regular, circular, quincuncial pores. Mouth constricted, half as broad, with 

 twelve to eighteen slender, parallel, vertical feet, about as long as the cephalis. 



Dimensions. Cephalis 0'02 long, 004 broad ; thorax 01 long, 0'08 broad. 



Habitat. Central Pacific, Stations 266 to 270, depth 2550 to 2925 fathoms ; also fossil in 

 Barbados. 



10. Anthocyrtium hispidum, Haeckel. 



Anthocyrtis hispida, Ehrenberg, 1875, Abhandl. d. k. Akad. d. Wiss. Berlin, p. 64, Taf. viii. 



fig. 2. 

 Anthocyrtis hispida, Biitschli, 1882, Zeitschr. f. wiss. Zool., vol. xxxvi. p. 540, Taf. xxxiii. 



fig. 30. 



Shell thorny, with sharp collar stricture. Length of the two joints = 1:4, breadth = 2:5. 

 Cephalis hemispherical, hyaline, with few very small pores, or without any ; with a stout conical 

 horn of twice the length. Thorax spiny, with regular, circular, hexagonally-framed pores (half as 

 broad as the bars between them). Mouth wide open, scarcely constricted, with twelve to fifteen 

 parallel, vertical, broad, lamellar, rectangular feet, reaching nearly the length of the thorax. 



Dimensions. Cephalis 0'02 to 0'03 long, 0'03 to 0"05 broad ; thorax 0'07 to 0'09 long, 01 to 

 012 broad. 



Habitat. Central Pacific, Stations 263 to 265, depth 2650 to 3000 fathoms ; also fossil in 

 Barbados. 



11. Anthocyrtium turris, n. sp. 



Shell thorny, very similar to Calocydas turris, Ehrenberg (1875, loc. tit., Taf. xviii. fig. 7), but 

 without fenestrated abdomen. Collar stricture deep. Length of the two joints = 1 : 3, 

 breadth = 1 : 3. Cephalis subspherical, hyaline, without pores, with a stout conical horn of 

 twice the length. Thorax nearly spherical, spiny, with regular, circular, quincuiicial pores. 

 Mouth little constricted, with fifteen to twenty parallel, vertical, broad, lamellar, rectangular 

 feet, about as long as the thorax. 



Dimensions. Cephalis 0'03 long, 0'03 broad ; thorax 01 long, 01 broad. 



Habitat. Central Pacific, Station 265, depth 2900 fathoms. 



