NORTH AMERICAN EARLY TERTIARY BRYOZOA. 
235 
The species of the genus are : 
Micropora coriacea Esper, 1791. 
Micropora perforata MacGillivray, 1859. 
Micropora normani Levinsen, 1909. 
Micropora hrevissima Waters. 1904. 
Micropora minuta Reuss, 1874. 
MICROPORA CORIACEA Esper, 1791. 
Plate 4, figs. 20-22. 
Bibliography ( Zoological ). 
1791. Flustra coriacea Esper, Die Pflanzentliiere, etc., ou Histoire naturelle des Zoophytes 
pi. 7, fig. 2. 
1852. Flustra coriacea Landsboeough, A popular history of British Zoophytes or Coral- 
lines, p. 353. 
1816. Discopora coriacea Lamarck, Histoire naturelle des animaux sans vertebres, ed. 2, 
vol. 1, p. 168 ; idem, 
1836, vol. 2, p. 251. 
1824. Discopora coriacea La- 
mouroux, Encyclopedic 
Methodique, Histoire 
Naturelle des Zoo- 
phytes ou Animaux Ra- 
yonnes, vol. 14, p. 255. 
1830. Discopora coriacea 
Blainviixe, Diction- 
naire des Sciences Na- 
turelles, vol. 60, p. 411. 
1830. Discopora. coriacea 
Blainviixe, Manuel 
d’Actinologie ou de 
Zoophytologie, p. 446. 
1848. Micropora coriacea Gray, List of British animals in the collection of the British 
Museum, p. 115. 
1854. Membranipora coriacea Busk, Catalogue of the Marine Polyzoa in the collection of 
the British Museum, pt. 2, p. 57. 
1872. Micropora coriacea Smitt, Floridan Bryozoa . . . Kongl. Svenska Vetenskaps-Akade- 
miens Handlingar, vol. 10, No. 11, p. 13. 
1880. Micropora coriacea Hincks, A History of the British Marine Polyzoa, p. 174. 
1884. Micropora coriacea Busk, Report on the Polyzoa collected by the Challenger, Report 
on the Scientific Results of the voyage of H. M. S. Challenger. Zoology, pt. 1, 
vol 10, pt. 30, p. 71. 
1888. Micropora coriacea Kirkpatrick, Polyzoa from Port Philip, Victoria, Annals Magazine 
Natural History, ser. 6, vol. 2, p. 75. 
1887. Micropora coriacea MacGillivray, A Catalogue of the Marine Polyzoa of Victoria. 
Transactions and Proceedings of the Royal Society of Victoria, vol. 23, p. 209. 
1889. Micropora coriacea Jelly, A Synonymic Catalogue of Marine Bryozoa, p. 176. 
1889. Micropora coriacea Waters, Bryozoa from Madeira, Journal Royal Microscopical 
Society, p. 16. 
1904. Micropora coriacea Waters, Antartique Voyage du Belgica, p. 39. 
Fig. 63. — Genus Micropora Gray, 1848. 
A-C. Micropora coriacea Esper, 1791. Three views, X 25, 
showing structure of this species. (After Hincks, 1880.) 
