Half the shell, with the enclosed central capsule and the phæodium, stained by carmine. (The central nucleus dark.) Fig. 2. _Sagmarium spongodictyum_, n. sp., × 50 1612 Half the shell, with its delicate spongy framework. Fig. 3. _Sagenoscena stellata_, n. sp., × 300 1610 Top and axial rod of a pyramid, prolonged into a crowned radial spine. Fig. 4. _Sagenoscena ornata_, n. sp., × 300 1610 A single pyramid with its axial rod, prolonged into a crowned radial spine. Fig. 5. _Sagoscena pellorium_, n. sp., × 300 1609 A single pyramid of the shell-surface. Fig. 6. _Sagoscena tentorium_, n. sp., × 100 1608 A piece of the shell with eight pyramids. Fig. 7. _Sagoscena prætorium_, n. sp., × 400 1609 Top of a pyramid. Fig. 8. _Sagena ternaria_, n. sp., × 400 1606 A single triangular mesh of the lattice sphere. Fig. 9. _Sagmidium crucicorne_, n. sp., × 400 1613 A single nodal point with three radial spines. Fig. 9_a_. A portion of a spine, more highly magnified. Fig. 10. _Sagosphæra penicilla_, n. sp., × 400 1607 One nodal point and its radial spine. Fig. 11. _Sagosphæra furcilla_, n. sp., × 300 1607 Two nodal points of the network. Fig. 11_a_. Extremity of a spine. Fig. 12. _Sagmidium quadricorne_, n. sp., × 400 1614 A nodal point of the shell surface, with four divergent spines. Fig. 13. _Sagoplegma scenophora_, n. sp., × 300 1615 Tops of two pyramids. Fig. 14. _Sagmarium plegmosphærium_, n. sp., × 300 1612 A nodal point of the spongy framework. [Illustration: 1.-7. SAGOSCENA. 8. SAGENA. 9.-14. SAGOSPHAERA.] PLATE 109. LEGION PHÆODARIA. Order PHÆOSPHÆRIA. Family AULOSPHÆRIDA. Fig. 1. _Aulosphæra dendrophora_, n. sp., × 50 1625 The entire shell, with the central capsule and its nucleus, enveloped by the dark granular phæodium. Fig. 2. _Aulosphæra dendrophora_, n. sp., × 300 1625 A single radial tube. Fig. 3. _Aulosphæra sceptrophora_, n. sp., × 300 1625 A hexagonal group of six triangular meshes. Fig. 4. _Aulosphæra sceptrophora_, n. sp., × 300 1625 A similar group, seen from the side, with three radial tubes. Fig. 5. _Aulosphæra spinosa_, n. sp., × 300 1627 A hexagonal group of six triangular meshes. Fig. 6. _Aulosphæra undulata_, n. sp., × 400 1627 A single radial tube. Fig. 7. _Aulosphæra spathillata_, n. sp., × 400 1624 A single radial tube. Fig. 7_a_. An abnormal variety, × 400