NORTH AMERICAN EARLY TERTIARY BRYOZOA. 
427 
Vicksburgian (Keel Bluff clay) : Seven and one-half miles southwest of Bladen 
Springs, Alabama (common). 
Plesiotypes. — Cat. No. 64286, U.S.N.M. 
CYCLICOPORA FILIFERA, new species. 
Plate 88, figs. IT-19. 
Description . — The zoarium incrusts shells. The zooecia are large, elongated, 
elliptical, distinct, separated by a prominent thread, often quite thick; the frontal 
is somewhat convex and porous; it is formed of an olocyst with small scattered 
pores surmounting a tremocyst with larger, corresponding pores. The apertura is 
orbicular and placed at the base of a large, oblique peristomie; the peristome is 
thin, salient, sharp, bearing on its proximal border a very small avicularium ; in 
the peristomie, there is often a very small mucro. The ovieell is hyperstomial, 
placed on the distal zooecium, globular, salient; it opens in the peristomie by a 
small orifice. 
Measurements . — Apertura 
ha= 0.20-0.25 mm. 
la= 0.20 mm. 
Zooecia 
jLz— 0.85-0.95 mm. 
|fe=0.55 mm. 
Affinities . — We are not quite certain of the genus of this species. The tremocyst 
in fact, is visible only on the very well preserved zooecia ; usually it does not exist 
and is replaced by a thick pleurocyst deposited between the threads which become 
very salient (fig. 18) ; finally there is a peristomice which does not correspond to 
the apertura. 
In this last character, in its ovieell which opens into the peristomie, in its 
small peristomial avicularium this species is not without analogy with the genus 
Smittina. Perhaps it will be necessary to make a special genus but the small num- 
ber of specimens collected does not permit us to do so. 
Occurrence . — Vicksburgian (Marianna limestone) : Well at depth of 140 feet, 
Escambia County, Alabama (very rare) ; near Claiborne, Monroe County, Alabama 
Cotypes. — Cat. Nos. 64287, 64288, U.S.N.M. 
CYCLICOPORA LATICELLA, new species. 
Plate 55, fig. 6. 
Description . — The zoarium incrusts shells. The zooecia are distinct, some- 
what elongated, very large, wide, elliptical; the frontal is convex and garnished 
with large tremopores scattered and funnel-shaped. The peristome is salient, com- 
plete; the apertura and the peristomice are suborbicular. On one of the sides of 
the zooecia there is a small elliptical avicularium somewhat straightened. 
jXs=1.00mm. 
\lz= 0.70 mm. 
Affinities . — The only specimen collected has been figured. It bears no ovieell. 
We classify it here from its apertura and its frontal. But it is evident that these 
characters are insufficient and that this species could also belong to the Hippopo- 
dinidae. 
Measurements . — Zooecia 
