XORTH AMERICAN LATER TERTIARY AND QUATERNARY BRYOZOA. 



189 



K-U. Batopora muUiradiata Reuss, 1869. K. Superior face of a colony showing the central pit. 

 L, N. Groups of ovicelled zooecia. M. Inferior face of the colony K. O. Specimen showing a second 

 layer. P. Group of ovicells, X 25. Priabonian at Montecchio-Maggiore, Italy. Q. Specimen from Val 

 di Lonti, Italy (Priabonian), showing a second layer from the neighborhood of the pit, X 10. R. Base 

 showing two circles of zooecia, X 10. S. Summit of a colony showing the pit \vith small zooecia 

 around it as well as ordinary zooecia. T. Section showing the pit and the zooecia in a second layer 

 around the first. From near Novezzina, Italy (Priabonian), X 25; a, zoarium showing a cap formed 

 by a second layer of zooecia, from Montecchio-Maggiore, Italy (Priabonian). U. Meridian section 

 showing the apical pit, the second layer and the ovicells. (After Waters, 1891.) ap, aperture; 

 ov, ovicell. 



Fig. 37. — Genus Orbitulipora Stoliczka, 18G1. 



A, B, H-J. Orbitulipora pcliolus Lonsdale, 1850. A. An entire zoarium from Latdorf. B. Trans- 

 verse section showing the two lamellae placed back to back (A, B, after Stoliczka, 1851.) H. An entire 

 bilamellar zoarium. I. Group of o\-icelled zooecia. J. Lateral view of the same zoarium as H, show- 

 ing the two lamellae. (H-J, after Reuss, 1867.) 



C-E. Orbitvlipora excmlrica Seguenza, 1878. C. An entire zoarium showing a lateral pit, X 12. 

 D. Meridian section showing the ancestrula surrounded by 5 zooecia, X 12. E. Transverse section 

 following the line a-a at right angles to D, X 25. 



F, G. Orbitulipora lenticidaris Reuss, 1869. Oral apertiwes, X 85. . (C-G, after Waters, 1919.) 



Genus STICHOPORINA Stoliczka, 1861. 



1861. Stichoporina Stoliczka, Oligocane Bryozoen von Latdorf in Bernberg, Sitzungsberiohte 

 der k. Akademie der Wissenschaften, Wien, vol. 65, Abth. 1, p. 92. 



"With a pit towards which the zooecia are directed. Oral aperture small. 

 Unilaminate to bilaminate ? Pit central." (Waters.) 

 Genotype. — Stichoporina reussi Stoliczka, 1861. 



