. Bulletin - United States National Museum. Science. KORTH AMERICAN LATER TERTIARY AND Ql^ATERNARY BRYOZOA. 129. Fig. 25.—Genus Inversiula Jullien, 1888. A. /reversmta nufn;.r Jullien, 1888. Zooecium. (After JulUen, 1888.) B-F. Inversiula inversa Waters, 1889. B. Zooecia, X 25. C. Decalcified zooecia, X 50. Distinct tubes occupy the place of the grooves. The interior membrane of the zooecial wall is not perforated by the stellate pores. A stellate pore X 250 is represented at a. D. Three stages of growth, X 50. There are deep grooves between the stellate pores. (B-D, after Waters, 1889.) E. St
. Bulletin - United States National Museum. Science. KORTH AMERICAN LATER TERTIARY AND Ql^ATERNARY BRYOZOA. 129. Fig. 25.—Genus Inversiula Jullien, 1888. A. /reversmta nufn;.r Jullien, 1888. Zooecium. (After JulUen, 1888.) B-F. Inversiula inversa Waters, 1889. B. Zooecia, X 25. C. Decalcified zooecia, X 50. Distinct tubes occupy the place of the grooves. The interior membrane of the zooecial wall is not perforated by the stellate pores. A stellate pore X 250 is represented at a. D. Three stages of growth, X 50. There are deep grooves between the stellate pores. (B-D, after Waters, 1889.) E. Structure of the stellate pores, X 200. (After Le\-insen, 1909.) F. Opercuhur, X 250. (After Waters, 1887.) Genus INVERSIULA JuIUen, 1888. 1888. Inrersiula Jullien, Mission scientifique du Cap Horn. 1882-83, VI, Zoologie, Brj-ozoaires, p. 41. No ovicell. The frontal is a tremocyst with stellate pores. The aperture is elliptical and transverse. The convexity of the ascopore is turned toward the aperture. Avicularia are present. No spines. Genotype.—Inversiula nutrix Jullien, 1888. Range.—Miocene-Kecent. The known species of this genus are: Inversiula nutrix Jullien, 1888. Inversiula {Microporella) inversa Waters, 1889. Inversiula (Microporella) airensis Maplestone, 1910. Inversiula (Microporella) quadricornis Maplestone, 1910. Group 3. HIPPOPORAE Canu and Bassler, 1917. Genus HIPPOPORINA Neviani, 1895. (For description see Bulletin 106, U. S. National Museum, p. 374.) HIPPOPORINA PUSILLA. new species. Plate 45, figs. 8, 9. Description.—The zoarium incrusts sponges and corals. The zooecia are dis- tinct, separated by a furrow, small, elongate, elliptical; the frontal is an absolutely smooth olocyst. The apertura is very small, sinrounded by a thick peristome which. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the origina
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