NORTH AMERICAN EARLY TERTIARY BRYOZOA. 



525 



4. Levinscn 1 also believed firmly that Eschanna pesanseris Smitt, 1875, had 

 endozooecial ovicells. If this observation be confirmed, this species is the type of' 

 a new genus of this family. Waters in 1909, thought, on the contrary, that it could 

 be placed in Phonicosia Jullien, 1888. 



5. Nyriozoum mariownse Busk, 1884, could perhaps also belong to the same 

 family. 



A "30 



D "85 



mov - 



ory 



FIG. 155. Genus CJtcHopora Levinsen, 1000. 



A-E. Cheilopora sinccra Sniitt, 1S67. A, B. Ovieelled zooecia, X 30. (After Nordgaard, 

 1000.) C. Lateral view of two zooecia showing the septulae, X 23. (After Levinsen, 1900.) 

 D, E. Opereulum and avicularian mandible, X 85. (After Nordgaard, 1905.) 



F, G. Cheilopora Jiaddoni Harrner, 1902. F. Showing an avicularium and the two kinds of 

 opercula, X 44. G. Basal views of a zooecium with trifoliate operculum, from the same slide, 

 X 44. (F, G after Banner, 1902.) 



avic, avicularium; mov, muscles of the ovisac; op, operculum; ory, ovary; ov, ovisac; t, ten- 

 tacles. 



All these species require further examination and we can not yet introduce 

 them into a regular nomenclature. 



Genus CHEILOPORA Levinsen, 1909. 



1909. Cheilopora LEVINSEN, Morphological and Systematic Studies on the Cheilostomntmis 

 Bryozoa, p. 353. 



The frontal is a tremocyst with pores in quincunx, not separable from the 

 olocyst, subjacent and perforated with very small corresponding pores. Two 



1 Morphological and Systematic Studies on the Cheilostomatous Bryozoa, p. 326. 



