. Carnegie Institution of Washington publication. The Bryozoa of the Tortugas Islands, Florida. 203 One colony inch high, composed of 24 internodes, taken at 10 fathoms on a sponge bed between Loggerhead and Garden Keys, Fig. 13.—Arborella dichotoma n. sp. Portion of colony, showing mode of growth. Fig. 14.—The same, showing details. Fig. —The same, operculum. Genus Tubucellaria d'Orbigny, 1850-52. Tubucellaria cereoides (Solander). SoLANDER, 1786, p. 26 {Cellana cereoides).—Waters, 1907, p. 129.—Levinsen, 1909, P- 305- One small colony about an inch in height was taken at a
. Carnegie Institution of Washington publication. The Bryozoa of the Tortugas Islands, Florida. 203 One colony inch high, composed of 24 internodes, taken at 10 fathoms on a sponge bed between Loggerhead and Garden Keys, Fig. 13.—Arborella dichotoma n. sp. Portion of colony, showing mode of growth. Fig. 14.—The same, showing details. Fig. —The same, operculum. Genus Tubucellaria d'Orbigny, 1850-52. Tubucellaria cereoides (Solander). SoLANDER, 1786, p. 26 {Cellana cereoides).—Waters, 1907, p. 129.—Levinsen, 1909, P- 305- One small colony about an inch in height was taken at a depth of 15 fathoms. This species has not before been taken on the American side of the Atlantic. Waters makes T. opuntioides Pallas a synonym of cereoides, but Levinsen believes that they should be kept separate. This difference of opinion, which has existed since the discovery of the form, does not seem likely to reach a settlement soon. The single specimen taken by me at the Tortugas is not sufficient to decide the point. It agrees closely with specimens of cereoides of the same size taken at Naples, but cereoides has hitherto been limited to the Mediterranean by those who separate the species, while Atlantic specimens are considered to be opuntioides. Genus Escharella (part) Gray, 1848. flscharella costifera n. sp. (Fig. 16.) Zooecia of moderate size, rather regularly ovoid in form, evenly swollen, nearly hyaline. Around the margin is a row of rather large pores, between. 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 Carnegie Institution of Washington. Washington, Carnegie Institution of Washington
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