Plate 134. Dorataspida. |
Diam. |
Fig. 1. Dodecaspis tricincta, n. sp., |
× |
400 |
The enclosed central capsule contains numerous spherical nuclei. |
Fig. 2. Lychnaspis minima, n. sp., |
× |
400 |
Six-sided basal pyramid of an equatorial spine, with the leaf-cross, seen from the centre. |
Fig. 3. Zonaspis cingulata, n. sp., |
× |
400 |
Equatorial section through the central capsule. n, nuclei; g, yellow bodies (intracapsular xanthellæ). |
Fig. 4. Zonaspis cingulata, n. sp., |
× |
800 |
Central pyramidal base of an equatorial spine, with the leaf-cross. |
Fig. 5. Stauraspis cruciata, n. sp., |
× |
400 |
Central union of the radial spines, three polar spines being taken off. |
Fig. 6. Lychnaspis longissima, n. sp., |
× |
400 |
Fig. 7. Lychnaspis minima, n. sp., |
× |
400 |
Five-sided basal pyramid of a tropical spine, with the leaf-cross, seen from the centre. |
Fig. 8. Lychnaspis minima, n. sp., |
× |
400 |
Six-sided basal pyramid of a polar spine, with the leaf-cross, seen from the centre. |
Fig. 9. Icosaspis elegans, n. sp., |
× |
400 |
An isolated polar plate. |
Fig. 10. Icosaspis cruciata, n. sp., |
× |
400 |
An isolated equatorial plate. |
Fig. 11, 12. Dorataspis species, |
× |
100 |
Diagram of the composition of the shell of twenty plates (and also of the central union of the basal leaf-cross). |
Fig. 11. Oblique equatorial aspect. |
Fig. 12. Accurate polar aspect (compare p. 804, 805). |
Fig. 13. Coscinaspis isopora, n. sp., |
× |
400 |
An isolated equatorial plate (with two aspinal and six coronal pores). |
Fig. 14. Coscinaspis isopora, n. sp., |
× |
400 |
Two isolated tropical plates (b, northern; d, southern), each with two aspinal and five coronal pores. |
Fig. 15. Diporaspis nephropora, n. sp., |
× |
400 |
Fig. 16. Acontaspis hastata, n. sp., |
× |
400 |