NORTH AMERICAN EARLY TERTIARY BRYOZOA. 
103 
CUPULADRIA, new genus. 
No ovicelh The zoarium bears vibracula. No gymnocyst. 
Genotype. — CupulacLria ( Cupularia ) canariensis Busk, 1859. 
Range. — Miocene-Recent. 
The genotype does not belong at all to the genus Cupularia, as we now under- 
stand the genus, and as it is defined by its type species. There are neither opesiules 
nor cryptocyst. Previously Smitt, in 1872, classified the genotype more correctly in 
M embranipora, as this genus was then understood. It can not, however, be main- 
tained in this genus, since its significance has been more restricted. We have there- 
fore been obliged to create a new genus, characterized by the presence of vibracula, 
although these organs of zoarial adaptation may not logically furnish good generic 
characters. We only add a letter to the primitive term to modify the long synonymy 
of this species as little as possible. 
This genus differs from Ileliodoma Cal vet, 1907, in the absence of a gymno- 
cyst. The absence of an endozooecial ovicell does not permit it to be confused with 
either V ibracellina Canu and Bassler, 1917, or Setosellina Calvet, 1907. 
Genus TROCHOPORA D’Orbigny, 1851. 
1851. Trochopora D’Orbigny, Paleontologie frangaise, Terrain Cretace, Bryozoaires, vol. 5, 
p. 506. 
The zoarium has the Lunulites form. The zooecia and the vibracula are 
arranged in distinct rows. The ancestrular zooecia are either hydrostatic or radicu- 
lar. The growth of the zoarium is effected bv superimposed (unizooecial) disks 
with the zooecia arranged in single rows. No ovicell. The vibracula are sym- 
metrical. 
Genotype. — Trochopora conica Def ranee, 1833. 
Range. — Lutetian-Helvetian. 
The known species of this genus are as follows : 
Trochopora conica Defrance, 1833. 
Trochopora ovalis D’Orbigny, 1851. 
Trochopora subplena Reuss, 1855. 
TROCHOPORA BOUEI Lea, 1833. 
Plate 10, figs. 1-17. 
1833. Lunulites bouei Lea, Contributions to Geology, p. 189, pi. 6. 
1833. Lunulites duclosii Lea, Contributions to Geology, p. 190, pi. 6, fig. 203. 
1862. Discoflustrellaria bouei Gabb and Horn, Monograph of the Fossil Polyzoa of the 
Secondary and Tertiary formations of North America, Journal of the Academy of 
Natural Sciences of Philadelphia, ser. 2, vol. 5, p. 154. 
1862. Heteractis duclosii Gabb and Horn, Monograph of the Fossil Polyzoa of the Second- 
ary and Tertiary formations of North America, Journal Academy of Natural 
Sciences of Philadelphia, ser. 2, vol. 5, p. 156, pi. 20, fig. 39. 
1890. Lunulites ( Discoflustrellaria ) bouei, and varieties concava, depressa, duclosii , tiza, 
and almina, De Gregorio, Monographie de la Faune Eocenique de l’Alabama et 
surtout de celle de Claimorne de l’Etage Perisien, Annales de Geologie et de Palonto- 
logie, livraisons, 7, 8, p. 243, pis. 41, 42. 
