NORTH AMERICAN EARLY TERTIARY BRYOZOA. 
791 
Affinities. — This species constitutes a strong divergent type in the genus. Its 
exterior aspect is absolutely that of Idmonea , its ovicell is exactly that of Tervia. 
1 1 is quite easy to determine in its interfascicular distance greater than in Idmonea 
atlantica Johnston, 1847, and all the other small American species. 
It offers much the same aspect as Idmonea hornesi Stoliczka, but differs from 
it in the very salient thread separating the zooecia and in the alternation of the 
fascicles (and not their opposite arrangement) on each side of the median crest. 
Our specimens are in agreement with the figure given by Waters, 1903, but 
resemble less that of Smitt, 1871. On the latter the first zooecium of each fascicle 
is isolated, a feature that does not exist on Waters’s figure nor on our specimens. 
Idmonea tumida being an Arctic species, it is curious to find it fossil in an 
equatorial sea. However, the bryozoa appear much more sensible to the tempera- 
ture. of the bottom than to geographic position. 
O commence. — Middle Jacksonian (Castle Hayne limestone) : Wilmington, 
North Carolina (rare). 
Upper Jacksonian (Ocala limestone) : Chipola River, east of Marianna, Jack- 
son County, Florida. 
Habitat. — Arctic Ocean. 
Plesiotypes. — Cat. No. 65354, U.S.N.M. 
TERVIA GLOBULIFERA, new species. 
Prate 146, tigs. 1-8. 
Description.— The, zoarium is free, bifurcated almost at right angles; the 
branches are elliptical in section and short, claviform in length; the posterior 
face is round, smooth, or slightly wrinkled transversally. The fascicles are formed 
of seven tubes; they are little salient, close together, invisible on the dorsal. The 
tubes are flat, visible, separated by a shallow furrow. The ovicell is globular , 
spherical, quite salient, placed at the bifurcations; the oeciostome is salient, trans- 
verse. a large lunar crescent in shape. 
M eo.sureme.nts . — 
-Distance between the fascicles- _ 
Width of the fascicles 
Diameter of the largest tube 
Diameter of the zoarium 
Number of tubes in the fascicles 
0.25-0.33 mm. 
0.16 mm. 
0.16 mm. 
1.00 mm. 
V aviations and Affinities. — This species belongs to the Tervia tumida group, 
and without the presence of the ovicell placed dorsally it is impossible to classify 
specimens generioally. It differs from Tervia pyrifero. With which it is associated 
in globular form of its ovicell, the smaller interfascicular distance (less than 0.35 
mm.), larger tubes, fascicles which do not border the zooecial margins, and short 
claviform branches. 
The zone of growth is short and thick.. 
The oeciostome is turned from the side of the dorsal contrary to the direction 
observed in the Tervia irregularis group where the oeciostome is turned from the 
side of the cellular face. 
