NORTH AMERICAN EARLY TERTIARY BRYOZOA. 
587 
MASTIGOPHORA HYNDMANNI Johnston, 1847. 
Plate 74, fig. 10. 
Zoological bibliography. 
1847. Lepralia hyndmanni Johnston, History of British Zoophytes, ed. 2, p. 306. 
1848. Herentia hyndmanni Gray, Catalogue British Museum, Animals, vol. 1, p. 122. 
1852. Lepralia hyndmanni Landsborough, History of British Zoophytes, p. 306. 
1854. Lepralia hyndmanni Busk, Catalogue Marine Polyzoa in British Museum, vol. 2. p. 74. 
1868. Lepralia hyndmanni Norman, Shetland Final Dredging Rep’t., 38th Meeting British 
Association, p. 307. 
1873. Hippothoa hyndmanni Smitt, Floridan Bryozoa, 2, p. 41 ; Kongl. Svenska Vetenskaps- 
Akad. Handl., vol. 11, No. 4. 
1880. Mastigophora hyndmanni IPxncks, British Marine Polyzoa, p. 281. 
1889. Mastigophora hyndmanni Jelly", A Synonymic Catalogue of Marine Bryozoa, p. 141. 
1903. Mastigophora hyndmanni Jullien and Calvet, Resultats des Campagnes scientifiques 
du Prince de Monaco, Fasc. 23, Brvozoaires provenant des campagnes de 
VHirondelle (1886-18SS), pp. 91, 146. 
1909. Escharina hyndmanni, Norman, The Polyzoa of Madeira and Neighboring Islands, 
Journal Linnean Society Zoology, vol. 30, p. 302. 
1911. Mastigophora hyndmanni Mme. Guerin-Ganivet, Bryozoaires des Cotes armoricaines, 
I, Travaux Scientifiques Laboratoire Zoologie de Concarneau, vol. 3, p. 6. 
Paleontological bibliography. 
1875. Lepralia crassilabra Manzoni, I Briozoi del pliocene antico di Castrocaro, p. 25, pi. 3, 
fig. 38. 
1879. Lepralia crassilabra Seguenza, Le formazioni terziarie della Provincia di Beggio 
(Calabria), Reale Accademia Lincei, Mem. della Classe science Fisielie, Matemat. e 
Nat., pp. 81, 202. 
1893. Mastigophora hyndmanni Neviani, Seconda cont. alia conoscenza Briozoi foss. italiani, 
Bolletino Society Geologia Italiana, vol. 12, p. 25. 
1900. Scliizoporelia hyndmanni Neviani, Bryozoi Neozoici di alcune Localita d’ltalia, pt. 6. 
Bolletino Societa Zoologia Italia, p. 9 (66). 
1900. Schizoporella hyndmanni Neviani, Briozoi fossili di Carrubare (Calabria), Bolletino 
Societa Geologia Italiana, vol. 23, p. 532 (30). 
The operculum always closes the ovicell. Among the specimens found in 
America, we have discovered a variation a little more elongated, which we have 
figured. 
It is remarkable that this species which existed on both shores of the Atlantic 
at the end of the Eocene epoch no longer exists in America, even in the Gulf of 
Mexico. 
Occurrence . — Lower Jacksonian: Jackson, Mississippi (rare). 
Middle Jacksonian: 31 miles south of Perry, Georgia (very rare). 
Vicksburgian : West bank of Conecuh River, Escambia County, Alabama 
(very rare) ; 1 mile north of Monroeville, Alabama (rare). 
Geological distribution . — Helvetian of Italy (Seguenza, Neviani) of Touraine 
(Canu) ; Zanclean of Italy (Seguenza) ; Plaisancian of Italy (Manzoni) ; Sicilian 
of Italy (Neviani). 
Habitat . — Atlantic in British waters, 65-179 meters; in the British Channel; 
in the Gulf of Gascony, 166-250 meters; at the Azores, 120-130 meters; south of 
Africa. Mediterranean, along the French shores. 
