PLATE 19. 



ASTROSPH^ERIDA. 



Diam. Page 

 Fig. 1. Dry mosphcera poly gonalis, n. sp., . . . x 200 249 



Fig. 2. Leptosphcera hexagonalis, n. sp., . . . . x 200 244 



Showing the central capsule (forming numerous club-shaped protuberances) 

 and the simple spherical nucleus in its centre. The skeleton is nearly 

 the same as in Diplosphcera hexagonalis (fig. 3). 



Fig. 3. Diplosphcera hexagonalis, n. sp., . . . . x 200 246 



The spherical central capsule, with radially striped protoplasm, is enclosed in 

 the inner shell, and exhibits in its centre the clear spherical nucleus. 



Fig. 4. Astrosphcera hexagonalis, n. sp., . . . . x 300 250 



Fig. 5. Astrosphcera stellata, n. sp., . . . . x 300 251 



The central capsule, enclosed in the inner shell, exhibits a distinct radial 

 striation of the protoplasm, and in the centre a clear spherical nucleus. 



Fig. 6. Haliomma rhodococcus, n. sp. (vel Sethosphcera rhodococcus), . x 400 237 

 The greater part of the outer shell is removed. 



