238 The America?i Geologist. April, 1900 
Bkyozoa. 
*i. Fenestella limbata Focrste. Bull., Denison Univ., vol. 
II, p. 83. 
The delicate species identified with the above is very abun- 
dant l)ut. unfortunately, the state of preservation is inadequate. 
The measurements and many of its characters agree equally 
well with F. sevillensis Ulrich, but the carina is apparently not 
obsolete and the habitus of the poriferous side agrees with Mr. 
Foerste's species. 
*2. Polypora fastuosa De Koninck. De Koninck, Aniin. 
foss. carb. de Belg., p. 7, plate A; Tuola, Perm-carb. Fossili- 
en von d. Westk. v. Spitzbergen, N. Jahrb. Min., 1875; Tuo- 
la, Eine Kohlenkalk-fauna v. den. Barent's Inseln, 1875: Fo- 
erste, Flint Ridge Bryozoa, Bull. Denison Univ., II, p. 82. 
This is a very common form in these beds and does not 
seem to vary greatly from the description given by Foerste and 
by Tuola. The dimensions agree with those of the larger form 
mentioned by Foerste. This species also occurs in the black- 
limestone immediately below this horizon. 
3. Pinnatopora trilineata Meek, Pal. East. Nebraska, p. 
157; Pal 111., vol. VIII, p. 620. 
This species occurs abundantly in the black limestone be- 
neath the shales under consideration and has not been detected 
in those shales though it undoubtedly occurs. The specimens 
are poorly preserved but may be recognized by the opposite 
crowded pinnae and the triple ridges on the mid-rib. 
4. Pinnatopora sp. 
A species evidently different from the above and perhaps 
more nearly resembling P. whitei Foerste, occurs in the shales 
of the Flint Ridge horizon but the material is too imperfect to 
permit satisfactory identification. 
*5. Fenestella norwoodiana Prout. 
Scptopora {Synocladia) biscrialis Swallow. 
This prettv species is represented by a few characteristic 
fragments from the 1)lack limestone below the "Flint Ridge" 
shales. It occurs in the Ohio beds in the variety gracilis of 
Foerste. 
6. The following descriptions by Mr. Bendrat apply to 
