ART. 14 FOSSIL AND RECENT BSYOZOA CANU AND BASSLER 41 



1914. Bugularia caraibica Osbuen, Bryozoa from the Tortugas Islands, 

 Florida. Publication Carnegie Institution, Washington, No. 182, 

 p. 188. 



Our specimens are rare. They differ from Bugula microecia Osburn, 



1914, in the absence of small oral avicularia and of distal spines on 



the dorsal. "Growing in loose tufts of a fine purple color" (Osburn). 



Occurrence.— Alahatross Station D, 2413, Gulf of Mexico; 26° 00' 00" 



N.; 82° 57' 30" W. ; 24 fms.; fine sand, black specks, 



broken shells. 



Tortugas (Osburn) ; St. Croix, Danish West Indies 



(Levins en). 



BUGULA AVICULARIA Linnaeus, 1758 



Plate 4, Figures 13, 14 



1889. Bugula avicularia Jelly, A synomymic Catalogue of Marine Bryozoa, 



p. 22. (Bibliography.) 

 1912. Synnotum avicularia Osburn, Bryozoa of the Woods Hole Region. 



Bulletin Bureau of Fisheries, vol. 30 (1910), p. 226, pi. 21, fig. 27. 



This is a new species for the region of the Gulf of Mexico. It is 

 known, however, from the Atlantic side of Greenland, from Canada, 

 and the United States. The literature upon it is very large. The 

 geographic distribution is still not yet complete. Our specimens 

 were living and ovicelled. 



Occurrence. — Albatross Station D. 2392, Gulf of Mexico; 28° 47' 

 30" N.; 87° 27' 00" W.; 724 fms.; brown-gray mud. 



Plesiotypes.— Cat. No. 7457, U.S.N.M. 



Genus DENDROBEANIA Levinsen, 1909 



DENDROBEANIA LAMELLOSA, new species 



Plate 5, Figures 9-14 



Description. — The zoarium is free, unilamellar, of large, broad 

 ramified fronds. The radical fibers are attached on the two sides of 

 the colony; the latter is chitinous. The zooecia are distinct, much 

 elongated, somewhat fusiform; the proximal gymnocyst is very small 

 and often absent; the mural rim is very thin and bears two distal 

 spines and four to six lateral spines. The pedunculate avicularium 

 is large, elongated, acuminated, with the shape of a kidney bean; 

 the mandible is small, in the form of a small tongue. The ovicell is 

 large, globular, smooth. 



Measurements. — ZooeciaL ^ " 



U2 = 0.35 mm. 



Affinities. — The form and size of the avicularium being of specific 

 importance in the different genera of this family, we give a photo- 

 graph of that of the present species. Another photograph shows the 

 structure and the mode of articulation of the spines. 



