English: Illustration from Report on the Radiolaria collected by Challenger during the years 1873-1876. Part III. Original description follows: Plate 6. Collosphærida. Diam. Fig. 1. Siphonosphæra socialis, n. sp., × 500 A small piece of the surface of a living cœnobium, seen from the surface. Only four individuals are visible, the central capsule of which contains numerous small nuclei and a central oil-globule. The including spherical lattice-shell is provided with a few (one to four) larger apertures, which are prolonged into short cylindrical tubules. Through these latter radiate
English: Illustration from Report on the Radiolaria collected by Challenger during the years 1873-1876. Part III. Original description follows: Plate 6. Collosphærida. Diam. Fig. 1. Siphonosphæra socialis, n. sp., × 500 A small piece of the surface of a living cœnobium, seen from the surface. Only four individuals are visible, the central capsule of which contains numerous small nuclei and a central oil-globule. The including spherical lattice-shell is provided with a few (one to four) larger apertures, which are prolonged into short cylindrical tubules. Through these latter radiate bundles of fine pseudopodia, branching and anastomosing, and forming a fine sarcode network between the alveoles of the calymma. On the surface of the alveolated jelly-sphere the pseudopodia form a dense radiating zone. Xanthella or yellow cells are everywhere scattered. Fig. 2. Siphonosphæra socialis, n. sp., × 300 A small cœnobium or colony in the state of alveolation, forming a jelly-sphere, composed of a great number of capsulated individuals, densely aggregated. Each central capsule contains an oil-globule, and is enclosed by a spherical lattice-shell, which bears a few (one to four) short cylindrical tubules. Each shell is again enveloped by a membranous polyhedral alveole and separated from it by structureless jelly. The thick cortical jelly-envelope, which surrounds the whole spherical colony, exhibits a fine radial striation, produced by radiating pseudopodia; many xanthellæ or yellow cells are scattered in the calymma. Fig. 3. Siphonosphæra pipetta, n. sp., × 300 Fig. 4. Siphonosphæra tubulosa, J. Müller, × 300 The central capsule, enclosed in the cavity of the shell, has a central oil-globule, and is surrounded by a few xanthella. Fig. 5. Siphonosphæra chonophora, n. sp., × 300 Fig. 6. Siphonosphæra serpula, n. sp., × 300 Fig. 7. Siphonosphæra patinaria, n sp., × 300 The central capsule, enclosed in the cavity of the shell, contains a cen
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