. Bulletin - United States National Museum. Science. 12 BULLETIN 115, UNITED STATES NATIONAL MUSEUM. The type and only species of the genus is typically of large size, with calyx shallow and broad, the average diameter of three speci- mens being about 10 cm. Ilo'nzon and locality.—Onondaga (Sellersburg) limestone: Louis- ville, Kentucky. A fragment belonging to the genus, and perhaps to the type species, has been found in Erie County, western New York. HIMEROCRINUS, new genus. HIMEKOCRINUS PLENISSIMUS (Lyon). Plate 2, figs. 2; plate 3, figs. 1-4; plate 4, figs. 1-4. Hadrocrinus plenissivius Ly
. Bulletin - United States National Museum. Science. 12 BULLETIN 115, UNITED STATES NATIONAL MUSEUM. The type and only species of the genus is typically of large size, with calyx shallow and broad, the average diameter of three speci- mens being about 10 cm. Ilo'nzon and locality.—Onondaga (Sellersburg) limestone: Louis- ville, Kentucky. A fragment belonging to the genus, and perhaps to the type species, has been found in Erie County, western New York. HIMEROCRINUS, new genus. HIMEKOCRINUS PLENISSIMUS (Lyon). Plate 2, figs. 2; plate 3, figs. 1-4; plate 4, figs. 1-4. Hadrocrinus plenissivius Lyon, 1869, Trans. Amer. PhUos. Soc, vol. 13, p. 445, pi 26, figs. 6 1, 6 2, 6 3.—Wachsmuth and Springer, 1897, North American Crinoidea Camerata, p. 328, pi. 24, figs. 2 a, b.—Rowley in Greene, Contrib. Indiana Paleontology, vol. 1, 1903, p. 165, pi. 48, figs. 5, Fig. 5.—HIMEROCRINUS. //// = i Br; \\\\ = i II Br; ^ = i III Br. Dotted line = R R and Br. The genus is founded on Hadrocrinus ylenissimus of Lyon^, which is the only known species. It attains a very large size, one of the largest of known Camerata, upwards of 20 specimens ranging from 10 to 15 cm. diameter of calyx. From a deep inverted cone involving the basals and radials —which are both large—the wall spreads out- ward in a graceful reversed curve to the arm bases, forming a broad, •Araer. Philos. Soc, vol. 13, 1869, p. 445, pi. 26, Hgs. 6 1, 2, 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 Print. Off.
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