Bulletin - United States National Museum - Smithsonian Institution

1^ BtrLLETIN 96, UNlTEt) STATES NATIONAL MUSEUM.
This interesting species is named after Dr. Marcus Benjamin,
editor of the United States National Museum.
Occurrence.—Upper Jacksonian: Rich Hill, 5^ miles southeast
of Knoxville, Crawford County, Georgia (very rare).
Type.—C^i. No. 62596, U.S.N.M.
ODONTIONELLA, new genus.
{Odontion, denticle.)
No intertentacular organ. No dietellae. With denticular plate in
the opesia. Septulae fairly numerous. Zoarium may be unilaminate
or bilaminate in the same species. (After Waters.)
Genotype.—Memhranipora Mans Hincks, 1885. Range,—Lutecian-
Recent.
We have instituted this genus for the Mans group (No. 13) of
Waters which this author thought in 1898 should be removed from
Memhranipora.
Odontionella {Memhranipora) savartil Audouin, 1826, the widely
distributed Tertiary and recent form occurs in the Upper Jacksonian
and Vicksburgian of Mississippi and Alabama.
ADENIFERA, new genus.
{Aden^ gland.)
With a distal glandular penthouse.
Genotype.—Memhranipora armata Hasw^ell, 1880. Range.—Jack-
sonian-Recent.
ADENIFERA INARMATA, new species.
Plate 1, fig. 2.
Description.—The zoarium is unilamellar, living upon algae; its
lower side bears hydrostatic tuberosities. The zoopcia are very large,
ogival in form, and distinct; the mural rim is very finely granulated,
rounded, enlarged at the base where it sometimes bears callosities.
The opesium is entire, elliptical but somewhat irregular. On the
distal part of the mural rim there is an arched pad which is hollow,
fragile, and symmetrical, the forepart containing two glands. No
avicularia.
,, , r^ . (^0=0.60-0.66 mm.
Measurements.—Opesia , „ ^^
^ [Z