NORTH AMERICAN EARLY TERTIARY BRYOZOA. 815 



FIG. 268. Genus Lichenopora Defrance, 1823. 



A. Fragment of the zoarium, X 25, of Lichenopora hispida Fleming, 1828, showing the can- 

 celli and the tubes provided with the visor. (After Hincks, 1880.) 



B. Ovicell of Lichenopora bullata MacGillivray, 1886, superposed upon eancelli. (After Mac- 

 Gillivray, 1889.) 



C. D. Longitudinal section, X 7, and X 12 of Lichenopora boletifonitis Reuss, 1869, a fossil 

 from Aldinga, Australia, showing tabulae irregularly placed. (After Waters, 1SS4. ) 



E. Protoecium of Lichenopora hispida Fleming, 1828. 



F. A single cell of Lichenopora verrucaria Fabricius, 1780, showing the acuminate margin. 

 (E, F, after Hincks, 1880.) 



G-U. Figures showing oeciostomes and spinules of the eancelli. G. Lichenopora hispida 

 Fleming, 1828. (After Hincks, 1880.) H. Lichenopora holdsivorthi Busk, 1S75. (After Waters, 

 1888.) I. Lichenopora mediterranea Blainville, 1834. (After Harmer, 1915.) J, K. Licheno- 

 pora echinata MacGillivray, 1883. (After Waters, 18S8.) L, M. Lichenopora radiata Audouiu, 

 1826. (After Hincks, 1880, and Waters, 1879.) In L the eancelli to the left are closed by a 

 delicate calcareous cover perforated with about two to ten holes and to the right they show spines 

 with globular terminations. N, O. Lichenopora novae-selandiae Busk, 1875. (After Harmer, 

 1915.) P, Q. Lichenopora verrucaria Fabricius, 1780. (After Smitt, 1866, and Harmer, 1896.) 

 R. Lichenopora reticulata MacGillivray, 1883. (After Waters, 1894.) S. Lichenopora vena- 

 buluni Jullien, 1888. (After Waters, 1887.) T. Lichenopora fimbriata Busk, 1875. (After 

 Busk.) U. Lichawpora capillata Kirkpatrick, 1890. (After Kirkpa trick.) 



