The entire shell and the central capsule. Numerous club-shaped radial apophyses or coecal sacs arise from the pink central capsule and are protruded through the pores of the medullary shell, which is completely hidden by them. The sarcomatrix in the calymma, surrounding the central capsule, exhibits a fine radial striation. Numerous retracted pseudopodia, bearing red granules, arise from the sarcomatrix and pierce the calymma radially. The interval between the two concentric shells is filled up by the hyaline calymma. Fig. 2. _Lychnosphæra regina_, n. sp., × 400 277 A part of the cortical shell, with a radial spine. Fig. 3. _Lychnosphæra regina_, n. sp., × 400 277 The medullary shell and the basal parts of the radial spines arising from it. Fig. 4. _Lychnosphæra regina_, n. sp., × 400 277 Distal end of a radial spine. Fig. 5. _Rhizoplegma lychnosphæra_, n. sp., × 200 276 The central capsule and the enclosed parts of the skeleton. The protoplasm is radially striped. The central nucleus (red) sends out numerous radial apophyses, which are protruded through the pores of the medullary shell. [Illustration: LYCHNOSPHAERA.] PLATE 12. LEGION SPUMELLARIA. Orders PHÆOSPHÆRIA ET SPHÆROIDEA. Families OROSPHÆRIDA, ASTROSPHÆRIDA et LIOSPHÆRIDA. Fig. 1. _Orosphæra huxleyii_, n. sp. (vel _Oroscena huxleyii_), × 50 1599 Fig. 1_a_. A piece of the network, the bars of which contain partly an axial canal, × 200 1599 Fig. 2. _Conosphæra orthoconus_, n. sp., × 200 221 Fig. 3. _Conosphæra platyconus_, n. sp., × 300 221 Fig. 4. _Conosphæra plagioconus_, n. sp., × 300 222 Fig. 5. _Ethmosphæra conosiphonia_, n. sp., × 400 69 Fig. 5_a_. Vertical section through the wall. Fig. 6. _Ethmosphæra polysiphonia_, n. sp., × 400 70 Fig. 7. _Cenosphæra compacta_, n. sp., × 300 65 Fig. 8. _Cenosphæra elysia_, n. sp., × 300 64 Fig. 8_a_. Vertical section through the wall. Fig. 9. _Cenosphæra mellifica_, n. sp., × 300 62 Fig. 10. _Cenosphæra favosa_, n. sp., × 300 62 Fig. 10_a_. Vertical section through the wall. Fig. 11. _Cenosphæra vesparia_, n. sp., × 300 62 Fig. 11_a_. Vertical section through the wall. [Illustration: 1. OROSPHAERA, 2.-4. CONOSPHAERA, 5. 6. ETHMOSPHAERA, 7.-11. CERIOSPHAERA.] PLATE 13. LEGION SPUMELLARIA. Orders SPHÆROIDEA ET PRUNOIDEA. Families STYLOSPHÆRIDA et ELLIPSIDA. Fig. 1. _Ellipsostylus aquila_, n. sp., × 300 300