I 
106 BULLETIN 125, UNITED STATES NATIONAL MUSEUM. 
marl): Muldrows Mills, 5 miles south of Maysville, South Carolina (very rare); 
Wilmington, Natural Well, 2 miles southwest of Magnolia, etc., North Carolina 
(rare). Miocene (Yorktown formation): 1 mile west of Fort Nonsense, Gloucester 
County and other localities in Virginia (rare). Miocene (St. Mary’s formation): 
Bowler’s wharf, 18 miles above Urbana, Middlesex County, Virginia (rare). Pli¬ 
ocene (Caloosahatchee marl): Monroe County, Florida (rare). Pleistocene: Simmons 
Bluff, Younges Island, Charleston County, South Carolina; Daytona, Florida (rare). 
Geologic distribution. —In Europe since the Stampian. 
Habitat. —Atlantic, Mediterranean, and boreal seas. 
Plesiotype. —Cat. Nos. 68559-68565, U.S.N.M. 
SCHIZOPODRELLA FLORIDINA Osburn, 1914. 
Plate 16, figs. 11-15. 
1914. Schizoporella floridina Osburn, The Bryozoa of the Tortugas Islands, Florida, Publications 
Carnegie Institute of Washington, No. 182, p. 206, text figs. 17, 18. 
Variations. —The zoarium is massive and formed of a number of superposed 
lamellae. Sometimes the zooecia are not oriented and are distributed in all direc¬ 
tions. The large avicularium is very fragile and easily altered by fossilization. 
The aperture in our fossil specimens is not exactly similar to that figured by 
Osburn differing slightly in its rimule not placed at the level of the frontal. We 
have not observed moreover the large interzooecial avicularium. 
Occurrence. —Miocene (Duplin marl): Wilmington and Lake Waccamaw, North 
Carolina (rare). Miocene (Choctawhatchee marl): Jackson Bluff, Ocklockonee 
River, 25 miles southwest of Tallahassee, Florida (very rare). 
Cotypes.— Cat. Nos. 68566, 68567, U.S.N.M. 
SCHIZOPODRELLA PUSILLA, new species. 
Plate 17, figs 18, 19. 
Description. —The zoarium is free and bilamellar or incrusting. The zooecia 
are small, little distinct, elongated, claviform; the frontal is somewhat convex, 
perforated by some large tremopores. The apertura is as high as wide; the rimule 
is wide, rounded, little deep. The ovicell is globular, hyperstomial. There are 
generally two small triangular avicularia with very salient beak placed on each side 
of the apertura. 
ha = 0.10-0.12 mm. „ . fZs = 0.54 mm. 
Za-O.lOmm. Zooecla h 2 -0.24 mm. 
Measurements. —Apertura 
Affinities. —This spe.ies has much resemblance to Schizopodrella patagonica 
Waters, 1905, in the arrangement of its avicularia; it differs from it in its larger 
avicularia, placed lower, salient and always inclined toward the aperture. The 
zooecia, although usually plain, are sometimes margined by a slightly salient thread. 
Occurrence. —Miocene (Choctowhatchee marl): Jackson Bluff, Ocklockonee 
River, 25 miles southwest of Tallahassee, Florida (rare). 
Holotype. —Cat. No. 68568, U.S.N.M. 
