PLATE 135, 



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. 



SPH^EROCAPSIDA et DoRATASPIDA. 



Fig. 



I. 



Fig. 



2. 



Fig. 



3. 



Fig. 



4. 



Fig. 



5. 



Fig. 



6. 



Hylaspis serrulata, n. sp., . 



Lychnaspis undulata, n. sp., . 



Lychnaspis giltschii, n. sp., . 



The spherical central capsule is enclosed in the shell. 



Lychnaspis rottenburgii, n. sp., 



Zonaspis cequatorialis, n. sp., 



Sphcerocapsa cruciata, n. sp., 



The entire shell, with its twenty cruciate perspinal holes. 



Fig. 7. Sphc&rocapsa cruciata, n. sp., 



Insertion of one spine in the cruciate perspinal hole of the shell. 



Fig. 8. Sphcerocapsa quadrata, n. sp., 



A group of pores and dimples in the shell surface. 



Fig. 9. Sphcerocapsa dentata, n. sp., . 



Insertion of one spine in the cruciate perspinal hole of the shell. 



Fig. 10. Sphcerocapsa pavimentata, n. sp., . 



Insertion of one spine in the perspinal hole of the shell, which is composed 

 of four cruciate aspinal holes and surrounded by a group of dimples 

 and pores. 





Diani. 



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