. Bulletin - United States National Museum. Science. EAELY PALEOZOIC BEYOZOA OF THE BALTIC PROVINCES. 289 ciated ramose bryozoans. The thick-walled subangular zooecia and mesopores, practical absence of acanthopores, and the few semidia- phragms will separate it from other species of the genus. Occurrence.—Not uncommon in the Wassalem beds (D3) at Uxnorm, Esthonia. Cotypes.—Csit. No. 57420, British Museum, one specimen and one thin ^r-u<^ Fig. 176.—Hemipheagma pygmjsum. a, side vie'W of a typical specimen, X2; 6, an oedinaet tan- gential SECTION, X20, SHOWING THE CONSPICU
. Bulletin - United States National Museum. Science. EAELY PALEOZOIC BEYOZOA OF THE BALTIC PROVINCES. 289 ciated ramose bryozoans. The thick-walled subangular zooecia and mesopores, practical absence of acanthopores, and the few semidia- phragms will separate it from other species of the genus. Occurrence.—Not uncommon in the Wassalem beds (D3) at Uxnorm, Esthonia. Cotypes.—Csit. No. 57420, British Museum, one specimen and one thin ^r-u<^ Fig. 176.—Hemipheagma pygmjsum. a, side vie'W of a typical specimen, X2; 6, an oedinaet tan- gential SECTION, X20, SHOWING THE CONSPICUOUSLY LAEGE, NUMEEOUS ACANTHOPOEES; C, POETION OF THE SAME, X35, "WITH MOEE DETAILED STEUCTUEE OF THE ACANTHOPOEES AND "WALLS; d, VEETICAL SECTION, X20, "WITH CHAEACTEEISTIC TABULATION. ChASMOPS LIMESTONE, SOUTH OF B5DAHAMN, ISLAND OF O ELAND. HEMIPHRAGMA PYGM^UM, new species. Text fig. 176. In the collection made by Dr. Bather from the Chasmops limestone, near Bodahamn, Oeland, are several specimens of a small, massive EemipJiragma, which proved upon study to have some very striking internal characters. The zoarium of the specimens observed is of small pedunculate masses about 8 mm. in height and the same meas- urement in their greatest width. The general shape of the zoarium, as well as the smooth surface of one of the types, is shown in figure 176 a. Maculae are observed with difficulty at the surface, the most striking feature here being rather small, polygonal to rounded zocecia, numerous angular mesopores, and many large conspicuous acantho-. 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 original United States National Museum; Smithsonian Institution; United States. Dept. of the Interior. Washington : Smithsonian Institution Press, [etc. ]; for sale by the Supt. of Docs. , U. S. Govt Prin
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