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 672
646 BULLETIN 106, UNITED STATES NATIONAL MUSEUM. In the first alternative we would be obliged to create a new work for the zoo- ecial ramifications which would change the description of most of Ulrich’s genera … Fig. 208. — Mesopores. A. Longitudinal thin section, X 25, of Tretocycloecia ? attenuata Ulrich, 1882. The meso- pores are short and few. B. Longitudinal thin section, X 25, of Heteropora ovalis new species. The mesopores are very short. C. Longitudinal section of Sparsicavea carantina D’Orbigny.…
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