Fig. 7_a_. The astropyle, partly detached from the wall of the central capsule, seen in profile, × 800 Fig. 8. _Catinulus quadrifidus_, n. sp., × 80 1553 A complete specimen, with four equal central capsules, united in a single spherical calymma. Fig. 8_a_. Some single pieces of the skeleton, × 400 [Illustration: 1. CIRCOGONIA, 2. CIRCORRHEGMA, 3. CIRCOSPATHIS, 4.-6. CIRCOPORUS, 7. CORTINETTA, 8. CATINULUS.] PLATE 118. LEGION PHÆODARIA. Order PHÆOGROMIA. Family MEDUSETTIDA. Fig. 1. _Gazelletta melusina_, n. sp., × 300 1674 From the peristome of the thorny campanulate shell arise six large descending feet, which are studded with arborescent fragile lateral branches, and armed at the distal end with stouter dichotomous terminal branches. Fig. 2. _Euphysetta staurocodon_, n. sp., × 300 1670 The peristome of the ovate shell bears an odd large foot with three terminal branches and three cruciate rudimentary feet. In the upper part of the shell-cavity is visible the sphæroidal central capsule (containing a nucleus of half the size, with numerous nucleoli); in the lower half the dark pigment-masses of the green phæodium. Fig. 3. _Euphysetta amphicodon_, n. sp., × 300 1670 The shell-wall exhibits the regular alveolate structure. From the mouth are prominent large masses of the phæodium, which is more voluminous than the shell-cavity, and seems to contain nucleated cells. [Illustration: 1. GAZELLETTA, 2. 3. EUPHYSETTA.] PLATE 119. LEGION PHÆODARIA. Order PHÆOGROMIA. Family MEDUSETTIDA. Fig. 1. _Gorgonetta mirabilis_, n. sp., × 100 1674 The entire body. From the margin of the cap-shaped shell arise six ascending arborescent feet and six alternating descending feet, which are covered with anchor-pencils and branched at the distal end. From the mouth of the delicately alveolate shell depend prominent parts of the dark voluminous phæodium. Fig. 2. _Gorgonetta mirabilis_, n. sp., × 300 1674 The distal end of an ascending foot; the branches bear a terminal spathilla with small recurved teeth. Fig. 3. _Gorgonetta mirabilis_, n. sp., × 300 1674 The distal end of a descending foot, with three lateral anchor-pencils and three terminal branches (broken off). Odd alveole contains an air-bubble. Fig. 4. _Gorgonetta mirabilis_, n. sp., × 600 1674 A single thread of an anchor-pencil with two quadridentate spathillæ, a larger proximal and a smaller distal (terminal). [Illustration: GORGONETTA.] PLATE 120. LEGION PHÆODARIA. Order PHÆOGROMIA. Family MEDUSETTIDA. Fig. 1. _Medusetta codonium_, n. sp., × 400 1668