Lychnaspidium haliommidium, Haeckel, 1882, Manuscript.
Parmal meshes circular, twice as broad as the bars, smaller than the irregular sutural meshes. By-spines (about two hundred) barbed and zigzag, as long as the radius. Radial main-spines four-sided; their outer pyramidal part shorter than the inner prismatic part. Sutures perfectly obliterated.
Dimensions.—Diameter of the shell 0.1, parmal pores 0.01, sutural meshes 0.015 to 0.02.
Habitat.—South Atlantic, Station 335, depth 1425 fathoms.
13. Lychnaspis rabbeana, n. sp.
Parmal meshes circular, very small, of the same breadth as the bars, and much smaller than the irregular sutural meshes. By-spines (about one hundred) very long and thin, zigzag, about as long as the diameter of the shell. Radial main-spines cylindrical, thick, twice to three times as long as the diameter of the shell. Sutures perfectly obliterated, with thickened condyles. Named in honour of Captain Henrik Rabbe (of Bremen), to whom I am indebted for many new Indian and Atlantic Radiolaria.
Dimensions.—Diameter of the shell 0.086, parmal pores 0.002, sutural pores 0.012, bars 0.002.
Habitat.—Indian Ocean (Madagascar), Rabbe, surface.
14. Lychnaspis cataplasta, n. sp.
Parmal pores very small, circular, half as broad as the bars, and much smaller than the irregular sutural pores. By-spines zigzag, as long as the diameter of the shell. Radial main-spines very thin and long, needle-shaped, cylindrical, five to six times as long as the diameter of the shell. Sutures perfectly obliterated. (This stunted species is one of the smallest of the Dorataspida.)