English: Illustration from Report on the Radiolaria collected by Challenger during the years 1873-1876. Part III. Original description follows: Plate 81. Stephanida. Diam. Fig. 1. Archicircus primordialis, n. sp., × 200 Fig. 2. Zygocircus polygonus, n. sp., × 200 Fig. 3. Zygocircus triquetrus, n. sp., × 300 Fig. 4. Archicircus hexacanthus, n. sp., × 300 Fig. 5. Zygocircus acacia, n. sp., × 300 Fig. 6. Lithocircus crambessa, n. sp., × 400 Fig. 7. Archicircus rhombus, n. sp., × 300 Fig. 8. Zygocircus pentagonus, n. sp., × 300 Fig. 9. Lithocircus quadricornis, n. sp., × 300 Fig
English: Illustration from Report on the Radiolaria collected by Challenger during the years 1873-1876. Part III. Original description follows: Plate 81. Stephanida. Diam. Fig. 1. Archicircus primordialis, n. sp., × 200 Fig. 2. Zygocircus polygonus, n. sp., × 200 Fig. 3. Zygocircus triquetrus, n. sp., × 300 Fig. 4. Archicircus hexacanthus, n. sp., × 300 Fig. 5. Zygocircus acacia, n. sp., × 300 Fig. 6. Lithocircus crambessa, n. sp., × 400 Fig. 7. Archicircus rhombus, n. sp., × 300 Fig. 8. Zygocircus pentagonus, n. sp., × 300 Fig. 9. Lithocircus quadricornis, n. sp., × 300 Fig. 10. Dendrocircus arborenscens, n. sp., × 300 Fig. 11. Dendrocircus dodecancistra, n. sp., × 300 Frg. 12. Archicircus sexangularis, n. sp., × 300 Fig. 13. Dendrocircus elegans, n. sp., × 400 Fig. 14. Dendrocircus stalactites, n. sp., × 400 Fig. 15. Lithocircus decimalis, n. sp., × 300 Fig. 16. Lithocircus magnificus, n. sp., × 400 The ovate, red-coloured central capsule exhibits in the lower half the striate podoconus, in the upper half four oil-globules, and at the left the kidney-shaped nucleus. Numerous 'yellow cells' or xanthellæ are scattered in the calymma, which contains brown pigment around the porochora. Numerous pseudopodia radiate from the supporting spines of the sagittal ring. Fig. 17. Lithocircus hexablastus, n. sp., × 400 . 1887 66 Radiolaria (Challenger) Plate 081
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