NORTH AMERICAN LATER TERTIARY AND QUATERNARY BRYOZOA. 99 
Affinities. —This species differs from Schizoporella insculpta Hincks, 1883, only- 
in the absence of the oral armature of the rimule and in the absence of a furrow near 
the apertura. The figured specimen is the only one that has been found; it lacks 
the ovicell and we can not make any close comparisons. 
Occurrence. —-Pliocene (Waccamaw marl): Waccamaw River, Horry County, 
South Carolina (very rare). 
Holotype. —Cat. No. 68542, U.S.N.M. 
Genus LACERNA Jullien, 1888. 
(For description see Bulletin 106, U. S. National Museum, p. 345.) 
LACERNA MUCRONATA Smitt, 1872. 
Plate 16, fig. 2. 
1872. Hippothoa mucroneta Smitt, Floridan Bryozoa, pt. 2, Kongl. Svenska Vetenskaps-Akade- 
miens Handlingar, vol. 11, no. 4, p. 45, pi. 8, fig. 169. 
Our determination of the American specimens is exact. We can observe on 
our specimens the same costules, the six spines, the wide rimule and the complete 
peristome indicated on Smitt’s figure. 
Occurrence. —Miocene (Duplin marl): Wilmington, North Carolina (very rare). 
Habitat. —Florida (47 meters). 
Plesiotype. —Cat. No. 68543, U.S.N.M. 
Genus STEPHANOSELLA Canu and Bassler, 1917. 
(For description see Bulletin 106, U. S. National Museum, p. 343.) 
STEPHANOSELLA BIAPERTA Michelin, 1842. 
Plate 16, figs. 4-9. 
Zoological bibliography. 
1889. Schizoporella biaperta Jelly, Synonymic Catalogue Recent Marine Bryozoa, p. 223 (bibliog¬ 
raphy). 
1901. Schizoporella biaperta Whiteaves, Catalogue of the Marine Invertebrata of Eastern Canada, 
Geological Survey of Canada, Bull. no. 722, p. 100. 
1907. Schizoporella biaperta Calvet, Expedition scientifique Travailleur et Talisman, p. 419 (bibli¬ 
ography). 
1908. Schizoporella biaperta Robertson, The Incrusting Chilostomatous Bryozoa of the West Coast 
of North America, University of California Publications, Zoology, vol. 4, p. 287, pi. 19, fig. 41. 
1909. Schizoporella biaperta Norman, The Polyzoa of Maderia and neighboring Islands, Journal 
Linnean Society London, Zoology, vol. 30, p. 303, pi. 40, figs. 3, 4 (var. divergens). 
1912. Schizoporella biaperta Osburn, The Bryozoa of the Woods Hole Region, Bulletin Bureau 
Fisheries, vol. 30, p. 237, pi. 29, fig. 49. 
1912. Schizoporella biaperta Guerin-Ganivet, Contributions a 1' etude des Bryozoaires des cotes 
Armoricaines, III, Bryozoaires de la region de Concarneau, Travaux scientifiques du 
Laboratoire de Zoologie de Concarneau, vol. 4, p. 13. 
1912. Schizoporella biaperta Nordgaard, Campagne arctique de 1907, de Due d’Orleans, Bryozoaires 
p. 40. 
1912. Schizoporella biaperta Barroso, Briozoos de la Estacion de Biologia maritima de Santander, 
Trabajos del Museo de Ciencias naturales, no. 5, p. 40. 
1914. Schizoporella biaperta Osburn, The Bryozoa of the Tortugas Islands, Publication Carnegie 
Institution of Washington, no. 182, p. 207. 
