ABT. 22. CYCLOSTOMATOUS BRYOZOA CANU AXD BASSLER. 143 



Figs, 4, 5. Stathmepora gabbiana Ulrich and Bassler page 39. 



Unovicelled aud ovicelled branches of tliis species, X 12. 

 Cretaceous (Vinceutown marl). Vincentown, New Jersey. 



Fig. 6. Laterocea simplex D'Orbigny, 1852 page 38. 



An ovicelled zoarium, X 12. The oeciopore is a quite minute opening. 

 Cretaceous (Coniacian) : Villedieu (Loir-et-Cher), France. 

 Figs. 7-10. Cea (Filicea) ref/ularis D'Orbigny, 1S52 page 37. 



7. A zoarium, natural size. 



8. Portion of a branch enlarged, showing the form of the orifices (figs. 7, 8. 



After D'Orbigny, 1852). 



9. Tangential section, X 25, showing the structure of the thickened wall, 

 10, Branch showing some zooecia with the oral tongue completely developed 



(after Filliozat, 1907). 

 Cretaceous (Coniacian) : Villedieu (Loir-et-Cher), France. 



Fig. 11. Diaperoecia polystoma Roemer, 1839 page 41. 



Portion of an ovicelled example, X 12. 



Cretaceous (Neocomian). Gross Wahlberg, Germany. 



Fig. 12. Diaperoecia papiUosn Reuss, 1846 page 42. 



An entire zoarium, X 12, provided with two ovicells. 

 Cretaceous, Chatham, England, 



Plate 8. 



Figs, 1-6. Diaperoecia turonica, new species page 42. 



1. An example, X 12, with a large elongated ovicell. 



2. Upper portion of a frond, X 25, showing elongated tubes. The growth 



occurs laterally and superiorly. 



3. An ovicelled frond, X 12, in which the zooecia are arranged as in Reti- 



cuUpora and as in Mesenteripoi a. 



4. A lamella, X 12, in the Reticulipora form of growth, showing the basal 



lamella and the zone of growth. 



5. A lamella, X 12, in the Mesenteripora form bearing an elliptical ovicell, 



6. Mature portion, X 25, showing short tubes and complete peristomes. 

 Cretaceous (Turonian) : Ruill6 Ponce (Loir-et-Cher), France. 



Fig. 7. Diaperoecia transversata, new species page 44. 



The type specimen, X 12. 



Cretaceous (Danian) Herfalge (Seeland), Denmark. 

 Figs. 8-10. Diaperoecia pxinctata, new species page 44. 



8, 9. The narrow ramose zoarium, X 12, with an ovicell developed. 



9. Opposite side of the same specimen, X 32. 



10. The .same specimen, X 25, showing the punctations more clearly. 

 Cretaceous (Danian) ; Herfolge (Seeland), Denmark. 



Fig. 11. Idmonea magna Canu and Bassler, 1920 page 50. 



An ovicelled example, X12, of this very abundant species which sel- 

 dom shows an ovicell. 

 Eocene (Jacksonian) : Jackson, Mississippi. 



Figs. 12. Diaperoecia saillons, new species page 43. 



The incrusting zoarium, X 12. 



Cretaceous (Vincentown marl) : Vincentown, New Jersey. 



Plate 9. 



Figs. 1-5. Diaperoecia compressa, new species page 45. 



1, Fragments of the bifoliate zoarium, natural size. 



2-A. Three fragments, X 12, bearing the ovicell which is never wider 

 than a branch. 



