NORTH AMERICAN EARLY TERTIARY BRYOZOA. 
525 
4. Levinsen 1 also believed firmly that Escharina 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. Myriozoum marionense Busk, 1884, could perhaps also belong to the same 
family. 
Fig. 155. — Genus Cheilopora Levinsen, 1909. 
A-E. Cheilopora sincera Smitt, 1867. A, B. Ovicelled zooec-ia, X 30. (After Nordgaard, 
1900.) C. Lateral view of two zooecia showing the septulae, X 23. (After Levinsen, 1909.) 
D, E. Operculum and avicularian mandible, X 85. (After Nordgaard, 1905.) 
F, G. Cheilopora haddoni Harmer, 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 Harmer, 1902.) 
avic, avicularium; mov, muscles of the ovisac; op, operculum; onj, 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 Cheilostomnt.ous 
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 
Morphological and Systematic Studies on the Cheilostomatous Bryozoa, p. 326. 
