Report on the Radiolaria Collected by H.M.S. Challenger During the Years 1873-1876, Plates / Report on the Scientific Results of the Voyage of H.M.S. Challenger During the Years 1873-76, Vol. XVIII

by Ernst Haeckel

PLATE 16. STYLOSPHÆRIDA et Druppulida. Diam. Page. Fig. 1. Stylosphæra melpomene, n. sp., × 300 [135] Fig. 2. Lithatractus jugatus, n. sp., (vel Stylosphæra jugata), × 400 [323] Fig. 3. Lithatractus fragilis, n. sp. (vel Stylosphæra fragilis), × 400 [319] Fig. 4. Stylosphæra lithatractus, n. sp., × 300 The entire shell. Fig. 5. Stylosphæra lithatractus, n. sp., × 300 The greater part of the cortical shell and the two spines taken off. The description of Stylosphæra lithatractus (intermediate between Stylosphæra jugata and Stylosphæra terpsichore, p. [137]) is by mistake not given in the text. Fig. 6. Stylosphæra calliope, n. sp., × 400 [134] Fig. 7. Stylosphæra clio, n. sp., × 400 [134] Fig. 8. Druppatractus ostracion, n. sp., × 300 [326] The entire shell. Fig. 9. Druppatractus ostracion, n. sp., × 300 [326] The anterior half of the cortical shell has been removed. Fig. 10. Druppatractus hippocampus, n. sp., × 300 [324] The entire shell. Fig. 11. Druppatractus hippocampus, n. sp., × 300 [324] The greater part of the cortical shell has been removed. Fig. 12. Stylosphæra nana, n. sp., × 300 [136] The entire shell Fig. 13. Stylosphæra nana, n. sp., × 300 [136] The greater part of the cortical shell taken off. Fig. 14. Sphærostylus ophidium, n. sp., × 300 [140] The entire shell. Fig. 15. Sphærostylus ophidium, n. sp., × 300 [140] The medullary shell alone. Fig. 16. Saturnulus ellipticus, n. sp., × 400 [141] Fig. 17. Saturnulus planetes, n. sp., × 400 [142]

PLATE 16.
STYLOSPHÆRIDA et Druppulida.
Diam.			Page.
Fig. 1. Stylosphæra melpomene, n. sp.,	×	300	[135]
Fig. 2. Lithatractus jugatus, n. sp., (vel Stylosphæra jugata),	×	400	[323]
Fig. 3. Lithatractus fragilis, n. sp. (vel Stylosphæra fragilis),	×	400	[319]
Fig. 4. Stylosphæra lithatractus, n. sp.,	×	300
The entire shell.
Fig. 5. Stylosphæra lithatractus, n. sp.,	×	300
The greater part of the cortical shell and the two spines taken off.
The description of Stylosphæra lithatractus (intermediate between Stylosphæra jugata and Stylosphæra terpsichore, p. [137]) is by mistake not given in the text.
Fig. 6. Stylosphæra calliope, n. sp.,	×	400	[134]
Fig. 7. Stylosphæra clio, n. sp.,	×	400	[134]
Fig. 8. Druppatractus ostracion, n. sp.,	×	300	[326]
The entire shell.
Fig. 9. Druppatractus ostracion, n. sp.,	×	300	[326]
The anterior half of the cortical shell has been removed.
Fig. 10. Druppatractus hippocampus, n. sp.,	×	300	[324]
The entire shell.
Fig. 11. Druppatractus hippocampus, n. sp.,	×	300	[324]
The greater part of the cortical shell has been removed.
Fig. 12. Stylosphæra nana, n. sp.,	×	300	[136]
The entire shell
Fig. 13. Stylosphæra nana, n. sp.,	×	300	[136]
The greater part of the cortical shell taken off.
Fig. 14. Sphærostylus ophidium, n. sp.,	×	300	[140]
The entire shell.
Fig. 15. Sphærostylus ophidium, n. sp.,	×	300	[140]
The medullary shell alone.
Fig. 16. Saturnulus ellipticus, n. sp.,	×	400	[141]
Fig. 17. Saturnulus planetes, n. sp.,	×	400	[142]

PLATE 17.

Legion SPUMELLARIA.

Orders SPHÆROIDEA et PRUNOIDEA.

Families Stylosphærida, Druppulida et Spongurida.

PLATE 17. Stylosphærida, Druppulida et Spongurida. Diam. Page. Fig. 1. Stylatractus giganteus, n. sp. (vel Amphistylus giganteus), × 300 [329] Fig. 2. Stylatractus sethoporus, n. sp., × 400 [330] The greater part of the cortical shell taken off. Fig. 3. Stylatractus sethoporus, n. sp., × 400 [330] The entire cortical shell. Fig. 4. Stylatractus compactus, n. sp., × 400 [329] Fig. 5. Amphisphæra cronos, n. sp. (vel Amphistylus cronos), × 400 [144] Fig. 6. Stylatractus neptunus, n. sp. (vel Amphisphæra neptunus), × 300 [328] Fig. 7. Amphisphæra pluto, n. sp., × 300 [144] The entire cortical shell. Fig. 8. Amphisphæra pluto, n. sp., × 300 [144] Meridional section through the three concentric shells. Fig. 9. Xiphatractus glyptodon, n. sp., × 400 [334] The entire cortical shell. Fig. 10. Xiphatractus glyptodon, n. sp., × 400 [334] The greater part of the cortical shell taken off. Fig. 11. Xiphatractus armadillo, n. sp., × 400 [332] Fig. 12. Spongoxiphus prunococcus, n. sp., × 300 [354] The spongy cortical shell. Fig. 13. Spongoxiphus prunococcus, n. sp., × 600 [354] The two concentric latticed medullary shells.

PLATE 17.
Stylosphærida, Druppulida et Spongurida.
Diam.			Page.
Fig. 1. Stylatractus giganteus, n. sp. (vel Amphistylus giganteus),	×	300	[329]
Fig. 2. Stylatractus sethoporus, n. sp.,	×	400	[330]
The greater part of the cortical shell taken off.
Fig. 3. Stylatractus sethoporus, n. sp.,	×	400	[330]
The entire cortical shell.
Fig. 4. Stylatractus compactus, n. sp.,	×	400	[329]
Fig. 5. Amphisphæra cronos, n. sp. (vel Amphistylus cronos),	×	400	[144]
Fig. 6. Stylatractus neptunus, n. sp. (vel Amphisphæra neptunus),	×	300	[328]
Fig. 7. Amphisphæra pluto, n. sp.,	×	300	[144]
The entire cortical shell.
Fig. 8. Amphisphæra pluto, n. sp.,	×	300	[144]
Meridional section through the three concentric shells.
Fig. 9. Xiphatractus glyptodon, n. sp.,	×	400	[334]
The entire cortical shell.
Fig. 10. Xiphatractus glyptodon, n. sp.,	×	400	[334]
The greater part of the cortical shell taken off.
Fig. 11. Xiphatractus armadillo, n. sp.,	×	400	[332]
Fig. 12. Spongoxiphus prunococcus, n. sp.,	×	300	[354]
The spongy cortical shell.
Fig. 13. Spongoxiphus prunococcus, n. sp.,	×	600	[354]
The two concentric latticed medullary shells.