{clxxxviii}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_:-- (a) Number of Families. (b) Number of Genera. (c) Number of Species. (d) Previously known Species. (e) New Species. (f) Fossil Species. (g) Pelagic Abundance. (h) Abyssal Abundance. (i) Figured on Plates +-----+-----+------+-----+------+-----+-----+-----+-------------------+ | | | | | | | | | Figured on | | (a) | (b) | (c) | (d) | (e) | (f) | (g) | (h) | 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 |