Radiolaria (Challenger) Plate 131

Description:

Illustration from Report on the Radiolaria collected by H.M.S. Challenger during the years 1873-1876. Part III. Original description follows:
Plate 131. Quadrilonchida. Diam. Fig. 1. Quadrilonche mesostaura, n. sp., × 300 Fig. 2. Quadrilonche platystaura, n. sp., × 100 Fig. 3. Xiphoptera dodecactena, n. sp., × 200 The central capsule with the central part of the skeleton. Fig. 4. Lonchostaurus bifurcus, n. sp., × 300 Fig. 5. Lonchostaurus crystallinus, n. sp., × 400 Fig. 6. Lonchostaurus rhomboides, n. sp., × 200 The radial spines are completely enclosed in the rhombic calymma, the surface of which is covered with small plates, similar to those in the shell of the Sphærocapsida. Fig. 7. Zygostaurus amphithectus, n. sp., × 300 The square central capsule envelops the half skeleton. Fig. 8. Zygostaurus sagittalis, n. sp., × 300 Fig. 9. Lithoptera tetraptera, n. sp., × 300 Fig. 10. Lithoptera quadrata, n. sp., × 300 The central part of the skeleton is enclosed by the four-lobed central capsule.