Bulletin - United States National Museum - Smithsonian Institution
Bulletin - United States National Museum - Smithsonian Institution
Bulletin - United States National Museum - Smithsonian Institution
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76 BULLETIN 96, UNITED STATES NATIONAL MUSEUM.<br />
Genus DIPLOTAXIS Reuss, 1867.<br />
1867. Diplotaxis Reuss, Ueber einige Bryozoen aus dein deutschen Unteroligocan,<br />
Sitzungsberichte der k. Acad, der Wissenschafteii, Wien,<br />
Abth. 1 p. 16.<br />
The zoarium is discoidal and formed of two lamellae back to back.<br />
The zoa'cia of the external face are oriented toward the zoarial mar-<br />
gins; the zooecia of the inner face are oriented toward the center.<br />
The apertiira has a distal rimule.<br />
Genotype.—Diplotaxis placentula Reuss, 1867. Latdorfian.<br />
Genus CONESCHARELLINA D'Orbigny, 1851.<br />
1851. ConeschareUina D'Okbigny, Paleontologle francaise. Terrain Cre-<br />
tace, vol. 5, p. 446.<br />
.<br />
The zoarium with lunoecia. The zoaria which have the form of a<br />
low cone or un arched disk only show a single hijQr of zocecia,<br />
Avliile their inner cavity is occupied by numerous avicularia placed<br />
in horizontal layers. Ovicells may occur. (After Levinsen, 1909.)<br />
The apertura has a distal rimule.<br />
Genotype.—Conesdiarellma cancellafM Busk, 1852.<br />
Range.—Mi ocene-Uecent<br />
The lunoecia are the openings of special compensation zoceciules.<br />
Genus BIPORA Whitelegge, 1887.<br />
1887. Biporn Whitelegge, Notes on some Australian Polyzoa. Proceed-<br />
ings Linnean Society, New South Wales (2), vol. 2, p. 337.<br />
The zoarium with lunoecia. The zoaria are plate-like or fanshaped<br />
with two layers of zocecia ; ovicells are not found. (x\fter<br />
Levinsen, 1909.) The apertura has a proximal rimule.<br />
Genotype.—Bipora u7nbonata Haswell, 1880. Recent.<br />
Genus FLABELLIPORA D'Orbigny, 1851.<br />
1851. Flabellipo7'a D'Orbigny, Paleontologie frangaise. Terrain Crfitace,<br />
vol. 5, p. 432.<br />
The zoaria, which have no lunoecia, are plate-like, two-layered ;<br />
no<br />
ovicells. (After Levinsen, 1909.) The apertura has a proximal<br />
rimule.<br />
Genotype.—Flahellipora elegans D'Orbigny, 1851. Recent.<br />
Genus MAMILLOPORA Smitt, 1872.<br />
1872. Mamillopora Smitt, Floridian Bryozoa, pt. 1, Kongl. Svenska Vetenskaps<br />
Akademiens Handlingar, vol. 10, No. 11, p. 33.<br />
The zoaria, which have no lunoecia, are plate-like, two-layered; no<br />
submedian cardelles. There are some avicularia between the zooecia.<br />
The ovicelled zooecia are much larger; their apertura is not trans-<br />
verse.<br />
Genotype.—Mamillopora cupula Smitt, 1872. Recent. (Florida.)
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