United States National Museum, Smithsonian Institution, United States. Department of the Interior · Washington : Smithsonian Institution Press, [etc.]; for sale by the Supt. of Docs., U.S. Govt Print. Off. · leaf 105
e restriction of families it was necessary to give more special characters, and that therefore he would restrict Pyripora solely to species with large open cells without special pores. History and discussion. — In 1847, when D’Orbigny published his Prodrome, it was the author’s idea that this was… … Fig. 20. — Genus Heterooecium Hincks, 1892. A, B. Heterooecium amplectens Hincks, 1892. A. Several zooecia, X 55. The small denti- cles are not only seen at the margin of the membranous area but are also visible through Fig. 21. — Genus Pyripora D’Orbigny, 1852. the calcified wall of the frontal…
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