clxxxviii
THE VOYAGE OF THE H.M.S. CHALLENGER.
1883. Ernst Haeckel (L. N. 46) revises the 4 orders and 32 families of Radiolaria, and gives more accurate definitions of them, as well as of the 2 subclasses (I. Holotrypasta = Acantharia and Spumellaria; II. Merotrypasta = Nassellaria and Phæodaria).
1885. D. Rüst (L. N. 51) describes 234 new species of fossil Radiolaria from the Jura, and illustrates them by twenty plates. Among them are 103 Spumellaria, 130 Nassellaria, and 1 Phæodaria; these are contained in 35 genera, of which 20 belong to the Porulosa, and 15 to the Osculosa.
254. Statistical Synopsis of the Twenty Orders:—
Legion. | Sublegion. | Order. | (a) | (b) | (c) | (d) | (e) | (f) | (g) | (h) | Figured on Plates. | |||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
I. Legion Spumellaria (Porulosa peripylea) |
I. Collodaria (Spumellaria palliata) |
1. Colloidea | 2 | 6 | 36 | 9 | 27 | 0 | A | E | 1, 3 | |||
2. Beloidea | 2 | 8 | 56 | 9 | 47 | 0 | A | D | 2, 4 | |||||
II. Sphærellaria (Spumellaria loricata) |
3. Sphæroidea | 6 | 107 | 660 | 105 | 555 | 66 | A | B | 5-8 11-30 | ||||
4. Prunoidea | 7 | 53 | 280 | 35 | 245 | 36 | B | B | 16, 17 39, 40 | |||||
5. Discoidea | 6 | 91 | 503 | 126 | 376 | 102 | B | A | 31-38 41-48 | |||||
6. Larcoidea | 9 | 51 | 260 | 8 | 252 | 0 | E | B | 9, 10 49, 50 | |||||
II. Legion Acantharia (Porulosa actipylea) |
III. Acanthometra (Acantharia palliata) |
7. Actinelida | 3 | 6 | 22 | 6 | 16 | 0 | E | E | 129 (figs. 1-3) | |||
8. Acanthonida | 3 | 21 | 138 | 50 | 88 | 0 | A | C | 130-132 | |||||
IV. Acanthophracta (Acantharia loricata) |
9. Sphærophracta | 3 | 6 | 22 | 6 | 16 | 0 | E | E | 133-138 | ||||
10. Prunophracta | 3 | 11 | 63 | 5 | 58 | 0 | D | B | 139, 140 | |||||
III. Legion Nassellaria (Osculosa monopylea) |
V. Plectellaria (Nassellaria palliata) |
11. Nassoidea | 1 | 2 | 5 | 1 | 4 | 0 | E | E | 91 (fig. 1) | |||
12. Plectoidea | 2 | 17 | 61 | 5 | 56 | 0 | D | C | 91 (figs. 2-12) | |||||
13. Stephoidea | 4 | 40 | 205 | 14 | 191 | 17 | C | B | 81, 82 92-94 | |||||
VI. Cyrtellaria (Nassellaria loricata) |
14. Spyroidea | 4 | 45 | 239 | 51 | 188 | 53 | C | A | 83-90 | ||||
15. Botryodea | 3 | 10 | 55 | 15 | 40 | 10 | E | C | 96 | |||||
16. Cyrtoidea | 12 | 160 | 1122 | 328 | 794 | 250 | C | A | 51-80 | |||||
IV. Legion Phæodaria (Osculosa cannopylea) |
VII. Phæocystina (Phæodaria palliata) |
17. Phæocystina | 3 | 15 | 112 | 30 | 82 | 24 | C | B | 101-105 | |||
VIII. Phæocoscina (Phæodaria loricata) |
18. Phæosphæria | 4 | 22 | 121 | 5 | 116 | 0 | C | A | 106-112 | ||||
19. Phæogromia | 5 | 27 | 159 | 5 | 154 | 0 | C | A | 99, 100 113-120 | |||||
20. Phæoconchia | 3 | 20 | 73 | 4 | 69 | 0 | D | B | 121-128 | |||||
Total, | 85 | 739 | 4318 | 810 | 3508 | 558 | ... | ... | 140 |
Note.—In the tenth and eleventh columns the relative abundance of each order at or near the surface and near the bottom is approximately indicated by the letters A-E, which have the following significance:—A, abundant; B, very numerous; C, many (medium quantity); D, few; E, very few.