ART. 14 FOSSIL AND EECBNT BRYOZOA CANU AND BASSLER 163 



munication between the Pacific and the Atlantic and that the Isthmus 

 of Panama is of relatively recent formation. The genus Crisulipora 

 appears to be a genus purely American, for it has not yet been 

 observed on the other continents. 



Occurrence. — Gulf of Mexico, Egmont Key, Fla. 



Cotypes.— Cat. No. 7837, U.S.N.M. 



Family HORNERIDAE Gregory, 1899 



Genus HORNERA Lamouroux, 1821 



HOENERA GALEATA Smitt, 1872 



1872. Hornera galeata Smitt, Floridan Bryozoa. Kongl. Svenska Veten- 

 skaps Akademiens Handlingar, vol. 10, p. 10, pi. 4, figs. 23-25. 



Occurrence. — Albatross Station D. 2319, north of Cuba; 23° 10' 

 37" N.; 82° 20' 06" W.; 143 fms.; gray coral. 

 Florida, 296 meters (Smitt). 



Family LICHENOPORIDAE Smitt, 1866 



Genus LICHENOPORA Defrance, 1823 



LICHENOPORA RADIATA Audouin, 1826 



Plate 29, Figures 1, 2 



1889. Lichenopora radiata Jelly, A synomymic Catalogue of the Marine 

 Bryozoa, p. 137. 



1923. Lichenopora radiata Canu and Bassler, North American Later Ter- 

 tiary and Quaternary Bryozoa. Bull. 125, U. S. National Museum, 

 p. 204, pi. 44, fig. 10, (Bibliography, geographic and geologic 

 distribution.) 



Our specimens are rare, but their discovery is important because 

 it exemplifies the great vigor of the species. It is universal as far as 

 the polar circle and its geologic distribution is considerable since the 

 Miocene proving the great instability of the oceanic shores. 



Occurrence.— Albatross Station D. 2319, north of Cuba; 23° 10' 37" 

 N.; 82° 20' 06" W.; 143 fms.; gray coral. 

 Albatross Station D. 2334, north of Cuba; 23° 10' 42" 

 N.; 82° 18' 24" W.; 67 fms.; white coral. 

 Plesioty pes. —C&t. No. 7539, U.S.N.M. 



LICHENOPORA BUSKI? Harmer, 1915 



Plate 29, Figure 9 



For the bibliography and discussion, see our Philippine volume. 



Variations. — The figured specimens show all the zooecial characters 

 of Lichenopora buslti Harmer, 1915. However, the colony is twice 

 as large, with a considerably larger number of radial rows of tubes. 

 As we have not discovered the ovicell, we have not judged it wise to 

 consider it a new species. 



Our specimen encrusted a colony of Stylopoma spongites; it was 

 dead and deprived of an ectocyst. 



