English: Illustration from Report on the Radiolaria collected by Challenger during the years 1873-1876. Part III. Original description follows: Plate 31. Cenodiscida et Phacodiscida. Diam. Fig. 1. Sethostaurus orthostaurus, n. sp., × 300 Fig. 2. Sethostaurus orthostaurus, n. sp., × 300 Vertical section through the centrum. Fig. 3. Sethostaurus recurvatus, n. sp., × 100 Optical section through the equatorial plane. Fig. 4. Sethostaurus rhombostaurus, n. sp., × 100 Optical section through the equatorial plane. Fig. 5. Sethostaurus cruciatus, n. sp. (vel Heliostaurus cruciatus),
English: Illustration from Report on the Radiolaria collected by Challenger during the years 1873-1876. Part III. Original description follows: Plate 31. Cenodiscida et Phacodiscida. Diam. Fig. 1. Sethostaurus orthostaurus, n. sp., × 300 Fig. 2. Sethostaurus orthostaurus, n. sp., × 300 Vertical section through the centrum. Fig. 3. Sethostaurus recurvatus, n. sp., × 100 Optical section through the equatorial plane. Fig. 4. Sethostaurus rhombostaurus, n. sp., × 100 Optical section through the equatorial plane. Fig. 5. Sethostaurus cruciatus, n. sp. (vel Heliostaurus cruciatus), × 300 Fig. 6. Phacostaurus oceanidum, n. sp., × 300 Fig. 7. Phacostaurus magnificus, n. sp., × 400 Fig. 8. Phacostaurus magnificus, n. sp., × 200 Vertical section through the centrum. Fig. 9. Sethostylus distyliscus, n. sp., × 400 Fig. 10. Sethostylus dicylindrus, n. sp., × 300 Marginal view. Fig. 11. Stylodiscus endostylus, n. sp. (vel Sethostylus endostylus), × 300 Fig. 12. Phacostylus amphistylus, n. sp., × 300 . 1887 65 Radiolaria (Challenger) Plate 031
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