172 
♦ 
BULLETIN 125, UNITED STATES NATIONAL MUSEUM. 
>,, , . \ha = 0.10 mm. 
Measurements .—Apertura 7 A 
1 l (a = 0.10 mm. 
Zooecia 
Lz = 0.50 mm. 
1^2 = 0.30 mm. 
Variations .—There are sometimes on the peristome two very small avicularia 
symmetrically placed. We have not observed the ovicell, but the distal interrup¬ 
tion of the peristome is a sufficient reason for our generic assignment. 
This species differs from Lepralia tenera Reuss, 1867, in the presence of frontal 
tremo pores. 
Occurrence. —Miocene: Kuhns, Carteret County, North Carolina (rare). 
Holotype. —Cat. No. 68692, U.S.N.M. 
Genus MASTIGOPHORA Hincks, 1880. 
(For description see Bulletin 106, U. S. National Museum, p. 586.) 
MASTIGOPHORA PESANSERIS Smltt, 1873. 
Plate 45, fig. 10. 
1873. Hippothoa pesanseris Smitt, Floridan Bryozoa, pt. 2, Kongl. Svenska Vetenskaps-Akademiens 
Handlingar, vol. 11, No. 4, p. 43, pi. 7, figs. 159, 160. 
1880. Mastigophora dutertrei, var. pesanseris Kirkpatrick, Polyzoa of Mauritius, Annals Magazine 
Natural History, ser. 6, vol. 1, p. 77. 
1899. Schizoporella pesanseris Waters, Bryozoa from Maderia, Journal Royal Microscopical Society, 
p. 11, pi. 3, figs. 7, 8. 
1905. Mastigophora dutertrei, var. pesanseris Thornely, Report on Polyzoa collected by Professor 
Herman at Ceylon in 1892, Ceylon Pearl Oyster Fisheries, Rept. Colonial Government, 
vol. 4, Suppl. Rep. No. 26, p. 117. 
1909. Schizoporella pesanseris Waters, Marine Biology of Sudanese Red Sea, Journal Linnean 
Society London, Vol. 31, p. 169. 
1909. Escharina pesanseris Norman, Polyzoa of Maderia and neighboring islands, Journal Linnean 
Society London, vol. 30, p. 302, pi. 40, fig. 7. 
1909. Escharina pesanseris Levinsen, Morphological and Systematic Studies on the Cheilostoma- 
tous Bryozoa, p. 326, pi. 18, fig. 1. 
1914. j Escharina pesanseris Osburn, Bryozoa of the Tortugas Islands, Florida, Publication Carnegie 
Institution of Washngton, No. 182, p. 207. 
The generic position of this species is still doubtful. According to the oper¬ 
culum, Waters classified it in the S. cecili group ( Arthropoma ); according to the form 
and position of the avicularia, Levinsen classified it in Mastigophora ( Escharina ). 
He believed that the ovicell is .endozooecial. If this observation be verified it will 
be necessary to create a new genus for this species. Our specimen is incrusting a 
coral. 
Occurrence. —Pleistocene: Mount Hope, Panama Canal Zone (rare). 
Habitat .—Indian Ocean: Mauritius, Nanaar (55 meters), Siam, Gulf of Suez 
(Red Sea). Atlantic Ocean: Madeira (90 meters), Tortugas Islands (12-68 meters). 
Plesiotype. —Cat. No. 68693, U.S.N.M. 
MASTIGOPHORA GRANULOSA, new species. 
Plate 3, fig. 4. 
Description .—The zoarium incrusts shells. The zooecia are distinct, separated 
by a deep furrow, large, elongated, and swollen; the frontal is very convex, orna¬ 
mented with numerous small pores and minute granulations. The aperture is small, 
t 
