NORTH AMERICAN LATER TERTIARY AND QUATERNARY BRYOZOA. 119 
MICROPORELLA CILIATA Linnaeus, 1759. 
Plate 20, figs. 1-6; plate 36, figs. 4, 5. 
/ 
1759. Cellepora ciliata Linnaeus, Systema Naturae, ed. 12, p. 1286. 
1889. Microporella ciliata Jelly, A synonymic catalogue of marine Bryozoa, p. 179 (bibliography). 
1891. Microporella ciliata Neviani, Briozoi postpliocenici di Livorno, Bollettino della Societa 
geologica italiana, vol. 10, p. 117 (sep. 21). 
1895. Microporella ( Fenestrulina ) ciliata Neviani, Briozoi fossili della Famesina Palaeontographia 
italica, vol. 1, p. 105 (sep. 29), pi. 5, fig. 25. 
1895-1900. Microporella ( Fenestrulina ) ciliata Neviani, Briozoi neozoici di alcune localita d’ltalia, 
Bollettino della Societa Romana per gli Studi Zoologici, pt. 1, vol. 4, p. 7; pt. 2, vol. 4, 
p. 234 (sep.10); pt. 3, vol. 5, p. 122 (sep. 21); pt. 5, vol. 7, pp. 13,15; pt. 6, vol. 8, p. 3, 9, 10. 
1896. Microporella (Fenestrulina) ciliata Neviani, Briozoi postpliocenici di Spilinga, Atti Academia 
Gioenia di Scienze Naturali in Catania, vol. 9, p. 22. 
1900. Microporella (Fenestrulina) ciliata Neviani, Briozoi neogenici della Calabrie, Palaeontographia 
italica, vol. 6, p. 176 (sep. 62) (regional bibliography). 
1900. Microporella ( Fenestrulina ) ciliata Neviani, Briozoi terziari et posterziari della Toscana, 
Bollettino della Societa geologica italiana, vol. 19, p. 368 (sep. 19). 
1904. Microporella inflata Ulrich and Bassler, Maryland Geological Survey, Miocene, p. 416, pi. 
110, fig. 7. 
1904. Microporella praeciliata Ulrich and Bassler, Maryland Geological Survey, Miocene, p. 415, 
pi. 110, fig. 6, pi. 113, fig. 3. 
1905. Microporella ( Fenestrulina ) ciliata Neviani, Briozoi fossili di Carrubare (Calabria), Bollettino 
della Societa geologica italiana, vol. 23, p. 324 (sep. 22). 
1907. Microporella ciliata Calvet, Expeditions scientifiques du Travailleur et du Talisman, p. 403, 
(regional bibliography). 
1908. Microporella ciliata Waters, The Bryozoa of the Sudanese Red Sea, Journal Linnean Society, 
London, vol. 31, p. 143. 
1911. Microporella ciliata Guerin-Ganivet, Bryozoaires proveqant de la Rade de Brest, Travaux 
du Laboratoire de Zoologie de Concarneau, p. 2. 
1912. Microporella ciliata Guerin-Ganivet, Contributions a l’etude des Bryozoaires des c6tes 
armoricaines, III, Travaux scientifiques du Laboratorie de Zoologie de Concarneau, p. 12. 
1912. Microporella ciliata Osburn, Bryozoa of Woods Hole Region, Bulletin Bureau of Fisheries, 
vol. 30, p. 233, pi. 24, fig. 44; pi. 30, fig. 90. 
1912. Microporella ciliata Barroso, Briozoos de la estacion de biologia maritima de Santander, 
Trabajos del museo de ciencias naturales, p. 26. 
1912. Microporella ciliata Osburn, Bryozoa from Labrador, Newfoundland, and Nova Scotia, 
Proceedings U. S. National Museum, vol. 43, p. 279. 
1913. Microporella ciliata Guerin-Ganivet, Bryozoaires de la mission arctique commandee par Ch. 
B6nard, Soci6t5 d’oceanographie du Golfe de Gascogne, vol. 7, p. 23. 
1913. Microporella ciliata Canu, Contribution a l’etude des Bryozoaires fossiles, IV, Pliocene d’Alger, 
Bulletin Soci5td Geologique France, vol. 13, p. 125. 
1915. Microporella ciliata Barroso, Contribucion al conocimiento de los Briozoos marinos de Espana, 
Boletin de la Sociedad espanola de Historia natural, vol. 15, p. 414. 
1915. Microporella ciliata Waters, Marine biology of the Sudanese Red Sea, Journal Linnean 
Society, London, vol. 31, p. 443. 
1917. Microporella ciliata Barroso, Notas sobre Briozoos, Boletin de la R. Sociedad espanola de 
Historia natural, vol. 17, p. 4. 
The great variations in the calcification of the frontal in this species have been 
known for a long time. They have been carefully noted by the zoologists and 
depend solely on the nature of the water and the age of the zoarium. When the 
granulations are important, the tremopores appear very small and even may dis¬ 
appear leaving the frontal smooth (forma inflata). If the granulations are little 
