FOSSIL AND RECENT BRYOZOA OF THE GULF OF 



MEXICO REGION 



By Ferdinand Canu 

 Of Versailles, France 



AND 



Ray S. Bassler 



Of Washington, D. C. 



The extensive dredgings of the United States Fish Commission 

 steamer Albatross in the Gulf of Mexico and adjoining waters, now 

 preserved in the United States National Museum, were consulted 

 from time to time by the authors of the present work during their 

 investigations of North American Tertiary bryozoa with the result 

 that a considerable number of observations upon the Gulf bryozoa 

 had accumulated at the conclusion of these studies. This fact, in 

 conjunction with the interest in the Gulf of Mexico faunas in general 

 and the comparatively small amount of published work upon their 

 bryozoa, afforded the reasons for the present paper. In addition, a 

 collection of fossil bryozoa from Bocas Island, Panama, submitted to 

 us for report by the United States Geological Survey, contained so 

 many forms identical with recent Gulf species that their study was 

 incorporated. 



The classic work of Smitt^ on Floridan bryozoa collected by Count 

 L. F. de Pourtales during the expeditions of the United States Coast 

 Survey in 1867-1869 in the deeper waters of the Florida region 

 remained practically the only publication until 1914, when Osburn's 

 "Bryozoa of the Tortugas Islands, Florida," ^ deahng with the shallow 

 water faunas, appeared. 



iSmitt, A. 'B', 1872-73. Floridan Bryozoa, collected by Count L. F. de Pourtales. Kongl. Svenska 

 Vetenskaps-Akadomiens Handlingar, pt. 1, 1872, in vol. 10, No. 11, pp. 1-20, pis. 1-4; pt. 2, 1873, in vol. 11, 

 No. 4, pp. 1-83, pis. 1-13. Stockholm. 



J Osburn, R. 0., 1914. The Bryozoa of the Tortugas Islands, Florida. Pub. No. 182, Carnegie Institu- 

 tion of Washington, pp. 181-222. 



No. 2710.— Proceedings U. S. National Museum, Vol. 72, Art. 14 



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