PLATE 15. 



Staurosph^erida et Druppulida. 



Diam. Page 

 Fig. 1. Cromyatractus tetracelyphus, n. sp., . . . x 300 335 



Fig. la. The two inner medullary shells. 



Fig. 2. Cromyatractus tetraphr actus, n. sp., . . x 300 335 



Fig. 3. Cromyatractus cepicius, n. sp., . . . x 300 336 



The spongy distal part of a polar spine. 



Fig. 4. Cromyatractus ceparius, n. sp. (vel Caryostylus ceparius), . x 300 336 



Fig. 5. Staurolonche pertusa, n. sp., . . . x 300 159 



Fig, 5 a. Its medullary shell. 



Fig. 6. Staurosphcera philippi, n. sp., . . . . x 300 154 



Fig. 7. Stauroxiphus gladius, n. sp., . . . x 400 163 



Fig. 8. Staurocaryum arbor escens, n. sp., . . . x 300 167 



Fig. 9. Rhizoplegma radicatum, n. sp., . . . x 200 276 



Fig. 9a. The medullary shell, which is completely hidden in fig. 9 by the 

 numerous club-shaped apophyses of the central capsule. 



