The central shell-cavity encloses the spherical central capsule and the concentric nucleus. Fig. 9. _Spongodrymus elaphococcus_, n. sp., × 150 272 The entire inner shell, but only a small part of the outer spongy envelope is represented. [Illustration: 1.-4. CENTROCUBUS, 5.-7. RHIZOSPHAERA, 8. PLEGMOSPHAERA, 9. SPONGODRYMUS.] PLATE 19. LEGION SPUMELLARIA. Order SPHÆROIDEA. Family ASTROSPHÆRIDA. Fig. 1. _Drymosphæra polygonalis_, n. sp., × 200 249 Fig. 2. _Leptosphæra hexagonalis_, n. sp., × 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 _Diplosphæra hexagonalis_ (fig. 3). Fig. 3. _Diplosphæra hexagonalis_, n. sp., × 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. _Astrosphæra hexagonalis_, n. sp., × 300 250 Fig. 5. _Astrosphæra stellata_, n. sp., × 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 _Sethosphæra rhodococcus_), × 400 237 The greater part of the outer shell is removed. [Illustration: 1.-5. DIPLOSPHAERA, 6. SETHOSPHAERA.] PLATE 20. LEGION SPUMELLARIA. Order SPHÆROIDEA. Families LIOSPHÆRIDA et ASTROSPHÆRIDA. Fig. 1. _Drymosphæra dendrophora_, n. sp., × 300 249 Fig. 1_a_. Meridional section through the central capsule. In the centre the large spherical nucleus is visible. The protoplasm around it is distinctly radiate. From the central capsule arise numerous club-shaped apophyses or cæcal sacs, which are protruded through the meshes of the inner shell, × 300 Fig. 1_b_. Basal part of a single radial spine, and its connection with the network of the two shells, × 400 Fig. 2. _Liosphæra polypora_, n. sp., × 300 78 The greater part of the outer shell is removed. Fig. 3. _Liosphæra hexagonia_, n. sp., × 400 76 Fig. 4. _Carposphæra melitomma_, n. sp. (vel _Melitomma melittosphæra_), × 400 73 [Illustration: 1. DRYMOSPHAERA, 2.-4. MELITOMMA.] PLATE 21. LEGION SPUMELLARIA. Order SPHÆROIDEA. Family CUBOSPHÆRIDA. Fig. 1. _Hexastylus cochleatus_, n. sp., × 400 174 From the central capsule, enclosed in the shell, numerous delicate radial pseudopodia arise, which are protruded through the pores of the shell.