Lateral view of the entire shell. The central capsule is visible between the two valves of the inner shell. The galeæ and rhinocannæ of the two inner valves are filled up by the black phæodium. Fig. 2. _Coelospathis ancorata_, n. sp., × 100 1754 The two valves of the inner shell; the galeæ and rhinocannæ of which are filled up by the black phæodium. Between the mouth of the two rhinocannæ is prominent the proboscis of the astropyle, arising from the radiate operculum of the central capsule. The latter contains numerous crystals and a big dark nucleus. Lateral view. Fig. 3. _Coelospathis ancorata_, n. sp., × 200 1754 The rhinocanna or the nasal tube of one valve, and the latticed frenulum which connects its mouth with the top of the galea. Fig. 4. _Coelospathis ancorata_, n. sp., × 80 1754 Distal end of a style. Fig. 5. _Coelospathis ancorata_, n. sp., × 200 1754 Terminal branches of a style. Fig. 6. _Coelospathis ancorata_, n. sp., × 600 1754 Lateral branch of a style, with an anchor-pencil. Fig. 7. _Coelospathis ancorata_, n. sp., × 300 1754 The lateral margins of the latticed valves of the outer shell or mantle, catching into one another, without being connected directly. Fig. 8. _Coelospathis octostyla_, n. sp., × 300 1754 Terminal branches of a style. Fig. 9. _Coelospathis octodactyla_, n. sp., × 400 1755 A single terminal branch of a style. [Illustration: COELOSPATHIS.] PLATE 129. LEGION ACANTHARIA. Orders ACTINELLIDA et ACANTHONIDA. Families ASTROLOPHIDA, LITHOLOPHIDA, CHIASTOLIDA et ASTROLONCHIDA. Fig. 1. _Actinelius primordialis_, n. sp., × 100 730 The red central capsule, coloured by carmine, contains numerous intensely stained nuclei. Fig. 2. _Litholophus decapristis_, n. sp., × 300 735 The conical central capsule contains numerous nuclei. The calymma exhibits on the distal end of each spine a coronet of myophriscs. Fig. 3. _Chiastolus amphicopium_, n. sp., × 150 738 Sixteen diametral spines pierce the spherical, red coloured capsule. The conical sheets of the calymma bear myophriscs. Figs. 3_a_, 3_b_. Two isolated diametral spines exhibiting the peculiar spiral revolution at their central part, × 300 Fig. 4. _Xiphacantha ciliata_, n. sp., × 300 761 The spherical central capsule is coloured red. The yellowish calymma envelops the radial spines completely. The polygonal network of lines, in which the radiating pseudopodia are symmetrically arranged, is partly visible. Fig. 5. _Xiphacantha ciliata_, n. sp., × 300 761