Bulletin - United States National Museum - Smithsonian Institution

74 BULLETIN 96, UNITED STATES NATIONAL MUSEUM.
Genus FEDORA Jullien, 1882.
1882. Fedora Jullien, Dragages du Traraillcur, Bulletin Society Zoologique
France, vol. 7, p. 17.
According to Jullien this genus has the following characters:
Zooecia subhexagonal with circular orifice, thick but not salient,
notched on its posterior fourth Avhere it is thin; finally placed a
little above the center of the zooecium, of w^hich it occupies about a
third of the diameter ; the ovicell nonsalient, indicated exteriorly by
a smooth stripe forming an obtuse angle, of which the summit is
turned toAvard the orifice. Avicularia not constant, situated on the
sides and outside of the orifice.
Genotype.—Fedora edwardsl Jullien, 1882.
Range.—Lutecian-Recent. One American species.
Genus STICHOPORINA Stoliczka, 1862.
1862. Stichoporina Stoliczka, Olisociine Bvyozoeu von Latdorf in Bernburg.
Sitzungsbericlite dcr k. Akademie der Wissenscliaften, Wien,
vol. 45, Abth. 1, pp. 71-74, pis. 1-3.
The zoarium is cupuliform. The apertura is orbicular or elliptical
with two cardelles ; the apertura of the ovarian zooecia is larger and
transverse. The avicularia have some vibraculoid mandibles.
Genotype.—Stichoporina. simplex Koschincki. 1885.
Range.—Lutecian-Recent.
The only American species of Stichoporina differs in no appreci-
able manner from the well-known S. protecta Koschinski of the
Lutecian and Priabonian. In North America the species has been
found only in the Middle Jacksonian of North Carolina.
SCHIZORTHOSECOS, new genus.
(Schizos, slit; orthos.^ straight; secos, small habitation.)
The zoarium is cupuliform. The apertura is oval with a proximal
rounded rimule. There are numerous interzooecial zooeciules capable
of being transformed into avicularia, into radicular zooeciules, and
into compensation zooeciules.
Genotype.—Schizorthosecos (OrhitoUtes) interstitia Lea, 1833.
Range.—Claibornian, Jacksonian.
This genus is exclusively American; it characterizes the Claibornian
and the base of the Jacksonian where it is exterminated
unexpectedly.
It differs from C onescharellina D'Orbigny and Bipora Whitolegge,
1887, in its distinct zooecia and in the absence of lunoecia. More-
over, we have not yet discovered the ovicells on the hundreds of
specimens w^hich we have at our disposal.