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 33.
Phacodiscida.
Diam.			Page.
Fig. 1. Sethodiscus lenticula, n. sp.,	×	300	[423]
Fig. 2. Sethodiscus lenticula, n. sp.,	×	300	[423]
Vertical section.
Fig. 3. Sethodiscus macrococcus, n. sp.,	×	300	[423]
Young shell, not yet closed, seen from the margin.
Fig. 4. Periphæna cincta, n. sp.,	×	400	[426]
Fig. 5. Triactiscus tricuspis, n. sp.,	×	300	[432]
Marginal view.
Fig. 6. Triactiscus tripyramis, n. sp.,	×	400	[432]
Fig. 7. Heliodiscus cingillum, n. sp.,	×	300	[448]
Fig. 8. Heliodiscus asteriscus, n. sp.,	×	300	[445]
Fig. 9. Heliodrymus dendrocyclus, n. sp.(vel Heliocladus dendrocyclus),	×	300	[451]

PLATE 34.

Legion SPUMELLARIA.

Order DISCOIDEA.

Family Phacodiscida.

PLATE 34. Phacodiscida. Diam. Page. Fig. 1. Sethostylus dentatus, n. sp. (vel Heliostylus dentatus), × 300 [429] Upper half of the disk. Fig. 2. Sethostylus serratus, n. sp. (vel Heliostylus serratus), × 300 [429] Lower half of the disk. Fig. 3. Heliosestrum octonum, n. sp., × 300 [440] Fig. 4. Heliodiscus solaster, n. sp., × 300 [447] Fig. 5. Heliodiscus echiniscus, n. sp., × 400 [448] Fig. 6. Heliosestrum medusinum, n. sp., × 300 [438] Fig. 7. Sethostaurus conostaurus, n. sp., × 100 [433] Normal form with four regular spines. Fig. 8. Sethostaurus conostaurus, n. sp., × 100 [433] Abnormal form with five spines. Fig. 9. Heliodiscus marginatus, n. sp., × 100 [449] Fig. 10. Heliodiscus trochiscus, n. sp., × 100 [445] Fig. 11. Heliodiscus polymorphus, n. sp., × 100 [447] Fig. 12. Heliodiscus polymorphus, n. sp., × 100 [447] Fig. 13. Heliodiscus trochiscus, n. sp., × 100 [445] Fig. 14. Astrophacus trochiscus, n. sp., × 100 [453]

PLATE 34.
Phacodiscida.
Diam.			Page.
Fig. 1. Sethostylus dentatus, n. sp. (vel Heliostylus dentatus),	×	300	[429]
Upper half of the disk.
Fig. 2. Sethostylus serratus, n. sp. (vel Heliostylus serratus),	×	300	[429]
Lower half of the disk.
Fig. 3. Heliosestrum octonum, n. sp.,	×	300	[440]
Fig. 4. Heliodiscus solaster, n. sp.,	×	300	[447]
Fig. 5. Heliodiscus echiniscus, n. sp.,	×	400	[448]
Fig. 6. Heliosestrum medusinum, n. sp.,	×	300	[438]
Fig. 7. Sethostaurus conostaurus, n. sp.,	×	100	[433]
Normal form with four regular spines.
Fig. 8. Sethostaurus conostaurus, n. sp.,	×	100	[433]
Abnormal form with five spines.
Fig. 9. Heliodiscus marginatus, n. sp.,	×	100	[449]
Fig. 10. Heliodiscus trochiscus, n. sp.,	×	100	[445]
Fig. 11. Heliodiscus polymorphus, n. sp.,	×	100	[447]
Fig. 12. Heliodiscus polymorphus, n. sp.,	×	100	[447]
Fig. 13. Heliodiscus trochiscus, n. sp.,	×	100	[445]
Fig. 14. Astrophacus trochiscus, n. sp.,	×	100	[453]

PLATE 35.