Ernst Haeckel,
Report on the Radiolaria
(1887)
“ Dimensions.—Height of the sagittal ring 0.12, breadth 0.09. Habitat.—South Pacific, Station 300, depth 1375 fathoms. 5. Semantis distephanus, n. sp. (Pl. 83, fig. 3) . Sagittal ring thin, semicircular, smaller than the thin basal ring, which exhibits two semicircular gates. Both rings are armed with numerous small spines of equal size, which on the former are arranged in two, on the latter in three regular rows. (The basal rod of the sagittal ring, separating the two basal gates, in fig. 3 is, by mistake, not distinctly enough drawn.) ”
