NORTH AMERICAN EARLY TERTIARY BRYOZOA. 



789 



Measure men ts. 



Distance between the fascicles (measured on the 



dorsal) 0.36 mm. 



Diameter of the peristonic 0.12 mm. 



Width of the fascicles 0.10 mm. 



Number of peristomes to the fascicles. 3.4 



A 



G-.2 



E.2J 



FIG. 254. Genus Tercia Jullien, 1SS2. 



A-F. Terria irrcgularis Meneghini, 1845. A, B. Normal iiml short ovicelli, X 12. (After 

 Waters, 1888.) C. Cordiform ovicell, X 12. (After Jullien, 1903.) D, E. The two faces of the 

 zoarium. (After Harmer, 1915.) F. Comb-like process in the zooecial tube near where it be- 

 comes erect. (After Waters, 1914.) 



G, H. Tervia jellyae Harmer. 1015. The two faces, X 12, o, oeciostome. (After Harmer, 

 1915.) 



Variations. The tubes are arranged sometimes in quincunx, sometimes in 

 verticells, and sometimes in fascicles; the last arrangement is more frequent. The 

 convexity of the dorsal is quite variable. 



In longitudinal section the tubes are very long. 



The fascicles are salient on each side of the zoarium viewed from the dorsal. 



Affinities. This species differs from Tervia irregutaris Meneghini. 1845, in 

 its smaller interfascicular distance (0.36 and not 0.60 mm.) and in its more narrow 

 and slender branches. 



