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 772
746 BULLETIN 106, UNITED STATES NATIONAL MUSEUM. DIPLOSOLEN COMPACTUM, new species. Plate 108, figs. 15-17. Description. — The zoarium incrusts stones; it emits tubular unilamellar ex- pansions. The tubes are distinct, cylindrical, fiat; the peristome is elliptical, horizontal, often closed by a… … Fig. 241. — Genus Biplosolen Canu, 191S. A-F. Diplosolcn obelia var. arctica Waters. A. Zoarium showing the adventitious tubules and the ovicell, X 25. B. Calcareous longitudinal section, showing the outer calcareous wall be- yond the zooecia, X 25. C. Transverse section, X 25. D. Calcareous…
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