PLATE 130. 



N.B. — The signification of the characters is the same in all the figures (compare p. 718). 



a. Northern polar spines. 



b. Northern tropical spines. 



c. Equatorial spines. 



d. Southern tropical spines. 



e. Southern polar spines. 



ASTROLONCHIDA. 



Fig. 1. Acanthometron bulbiferum, n. sp., 



Fig. 2. Acanthometron cylindricum, n. sp., 



Fig. 3. Lithophy Ilium gladiatum, n. sp., 



Fig. 4. Stauracantha quadrifurca, n. sp., 



Fig. 5. Stauracantha orthostaura, n. sp., 



Fig. 6. Phatnacantha icosaspis, n. sp., 



Fig. 7. Pristacantha polyodon, n. sp., 



Fig. 8. Pristacantha dodecodon, n. sp., 



Only the central parts and the leaf-cross. 



Fig. 9. Pristacantha octodon, n. sp., . 





Diam. 



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300 



745 



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743 



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754 



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X 



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765 



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766 



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x 200 



765 



