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^EEOCAPSIDA et DORATASPIDA. 



Diam. Page 

 Fig. 1. Hylaspis serrulata, n. sp., . . . . . x 300 846 



Fig. 2. Lychnaspis undulata, n. sp., . . . . x 400 841 



Fig. 3. Lychnaspis giltschii, n. sp., . . . . x 400 839 



The spherical central capsule is enclosed in the shell. 



Fig. 4. Lychnaspis rottenburgii, n. sp., . . . x 400 841 



Fig. 5. Zonaspis cequatorialis, n. sp., . x 300 834 



Fig. 6. Sphcerocapsa cruciata, n. sp., . . . x 150 798 



The entire shell, with its twenty cruciate perspinal holes. 



Fig. 7. Sphcerocapsa cruciata, n. sp., . . . . x 800 798 



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



Fig. 8. Sphcerocapsa quadrata, n. sp., . . . . ' x 800 798 



A group of pores and dimples in the shell surface. 



Fig. 9. Sphcerocapsa dentata, n. sp., . . . . x 800 798 



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



Fig. 10. Sphcerocapsa pavimentata, n. sp., . . . . x 800 798 



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. 



