NORTH AMERICAN EARLY TERTIARY BRYOZOA. 
495 
little prominent; it is hvperstomial and opens into the peristomie. The median 
avicnlarium is small, little salient; it deforms the peristomice inferiorly. 
jy, , ti • , mm. rj . fZs=0.44mm. 
Measurements. — renstomice / „ , _ Zooecia- , nn . _ 
\lpe= 0.10 mm. [fc=0.24-0.30 mm. 
Affinities. — The aspect of this species is lamentable ; without grace or elegance, 
it can not compare with any of the elegant Vicksburgian species. 
It differs from Umbonula ceratomorpha Reuss, 1847, in its smaller dimensions 
(Zs=0.44 and not 0.60 mm.) and in its much smaller areolae. 
Occurrence. — Vicksburgian (Marianna limestone) : Salt Mountain, 5 miles south 
of Jackson, Alabama (rare). 
Holotype. — Cat. No. 64306, U.S.N.M. 
UMBONULA CERATOMORPHA Reuss, 1847. 
Plate 94, fig. 18. 
1847. Cellepora ceratomorpha Reuss, Die fossilen Polyparien des Wiener Tertiarbeckens, 
Haidinger’s Naturwissenscbaftliche Abhandl ungen, vol. 2, p. 80, pi. 9, fig. 25. 
1863. Reptescharella cornuta Romee, Beschreibung der norddeutschen tertiaren Polyparien, 
Paleontograpbica, vol. 9, p. 212, pi. 36, fig. 6. 
1874. Lepralia ceratomorpha Reuss, Die fossilen Bryozoen des Oesterreichiscb-Ungarisehen 
Mioeans, Abtli. 1. p. 35, pi. 3, figs. 6-8. 
The bibliography of this species is rather confused, and as we have not at hand 
the data for a serious discussion, we can consider therefore only the published 
figures. Even in these narrow limits its cosmopolitanism is quite manifest. 
Our American specimens are escharian, whereas the European specimens are in- 
crusting. According to present ideas this character is not specific. 
[Ls=0. 60-0.70 mm. 
Measurements . 
t-, . , . f/U>e=0.16 mm. „ . , 
-renstomice/ Zooecia, aoaao . 
fo>e=0.12 mm. I 0.30-0.34 mm. 
Occurrence. — -Vicksburgian (Marianna limestone) : West bank of Conecuh 
River, Escambia County, Alabama (rare) ; Murder Creek, east of Castlebury, Cone- 
cuh County, Alabama (rare) ; Salt Mountain, 5 miles south of Jackson, Mississippi 
(rare). 
Vicksburgian (Red Bluff clay) : 74 miles southwest from Bladen Springs, Ala- 
bama (very rare). 
Geological distribution. — Chattian (Upper Tongrian) of Germany (Roemer) ; 
Tortonian of Austria Hungary (Reuss). 
Plesiotypes. — Cat. No. 64305, U.S.N.M. 
Genus PHOCEANA Jullien, 1903. 
1903. Phoceana Jullien, Bryozoaires provenant des Campagnes de V Hirondelle, p. 107. 
The apertura is semicircular with poster slightly concave ; it is deprived of 
cardelles and bears a pseudolyrula formed by the elevation of the peristomial wall. 
The operculum bears a chitinous mural rim incomplete at the level of the convexity 
of the upper border and little removed from the lateral borders. 
Genotype. — Phoceana columnaris Jullien, 1903. 
Range.- — Jacksonian — Recent. 
