English: Illustration from Report on the Radiolaria collected by Challenger during the years 1873-1876. Part III. Original description follows: Plate 139. Belonaspida et Hexalspida. Diam. Fig. 1. Hexacolpus nivalis, n. sp., × 300 Fig. 2. Hexalaspis heliodiscus, n. sp., × 300 Fig. 3. Hexaconus ciliatus, n. sp., × 300 Fig. 4. Hexaconus serratus, n. sp., × 300 c, Central base of an equatorial spine; d, central base of a tropical spine. Fig. 5. Hexaconus coronatus, n. sp., × 300 Fig. 6. Hexaconus velatus, n. sp., × 300 Marginal view of the shell. Fig. 7. Hexaconus vaginatus, n. s
English: Illustration from Report on the Radiolaria collected by Challenger during the years 1873-1876. Part III. Original description follows: Plate 139. Belonaspida et Hexalspida. Diam. Fig. 1. Hexacolpus nivalis, n. sp., × 300 Fig. 2. Hexalaspis heliodiscus, n. sp., × 300 Fig. 3. Hexaconus ciliatus, n. sp., × 300 Fig. 4. Hexaconus serratus, n. sp., × 300 c, Central base of an equatorial spine; d, central base of a tropical spine. Fig. 5. Hexaconus coronatus, n. sp., × 300 Fig. 6. Hexaconus velatus, n. sp., × 300 Marginal view of the shell. Fig. 7. Hexaconus vaginatus, n. sp., × 300 Fig. 8. Thoracaspis bipennis, n. sp., × 300 Fig. 9. Belonaspis datura, n. sp., × 400 . 1887 66 Radiolaria (Challenger) Plate 139
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