1889 .] 
331 
[Foerste. 
side, between the ends of the cell apertures. Cells oval. The 
edges of the fronds along a narrow border are non-celluliferous, 
the non-celluliferous border being more or less irregularly striated 
longitudinally, the striae not conspicuous. No well defined eleva- 
tions or monticules are found upon the surface of the specimens. 
Although the specimens in question do not branch, their evidently 
fragmental character warrants us in unhesitatingly referring the 
same to Phcenopora fimbriata, a common species in the Clinton of 
Ohio, but elsewhere so far unknown from surface views ; the sur- 
face being usually attached to the matrix, the fronds parting and 
becoming exposed along the epithecal membrane. 
Ph^nopora magna, Hall and Whitfield. 
In the cementing material of the conglomerate at Belfast, High- 
land county, Ohio, occur a few fragments, with seven cells in a 
length of 2 mm. and nine and a half cells in the same width. The 
surface shows low, indistinct elevations, usually 3 mm. apart. The 
fronds are broader, usually about 4 mm. in width. In other respects 
these fragments agree with Phcenopora fimbriata just described. 
Pachydictya. 
A small fragment was found at Cumberland Gap, Tennessee, 
15 mm. long, bifurcating twice in this distance. The branches 
4 to 5 mm. broad and at least 1.5 mm. thick. The cells are of oval 
form, and are arranged in well marked longitudinal lines along 
the frond and in less evident diagonal rows across the same. There 
are five cells in a length of 2 mm. and six in the same width ; from 
nine to fourteen cells occupy the width of a branch ; perhaps the 
very edges of the fronds were destitute of cells and formed a nar- 
row non-celluliferous margin. 
At Collinsville, Alabama, forms of the same general description 
as the Tennessee specimens were found. 
At Collinsville is found also another bryozoan having fronds 
4 mm. wide, unbranched in a length of 18 mm. ; frond moderately 
curved however in that length. About fifteen rows of cells oc- 
cupy the width of the frond ; of these, six cells occupy a length 
of 2 mm. near the margin of the frond, and seven cells neaPthe 
centre of the same. About four and three-tenths cells occupy 
the width of 1 mm. near the margin of the frond and five and 
three-tenths cells near the centre of the same. The character 
