OHIO STATE ACADEMY OF SCIENCE. 49 
NEW FOSSILS FROM THE CORNIFEROUS, HAMIL- 
TON, AND MEDINA SERIES. 
H. HERZER. 
Cystiphyllum discoideum, sp. nov. 
(Plate INS Pies 1.) 
A very flat discoid corallum, 3-16 inch high and 1 2-16 
inch diameter; calyx superficial, smoothly floored and 
slightly depressed or concave, leaving a broad outer margin 
of 3-16 inch in width, well marked by about go stout radiat- 
ing striz indicating the regularity of its structure under 
surface with epitheca and marked by concentric growth of 
broad, flat rings, each one representing a superimposed 
floor; the edge of the uppermost showing indentations of 
striz. Cysts rather small. 
Corniferous limestone, Columbus, Ohio. 
Cystiphyllum retrorsum, sp. nov. 
(GElate gi io) 
Corallum simple, flat convex, + inch high and 2 inches 
in diameter. Calyx reversed, smooth with two raised cir- 
cular rings 5-16 inch apart, causing two marked zones 
on the surface, the outer zone with lamellular radiating 
ruge 14 to one-half of an inch, indicating the cystoid ar- 
rangement. Cyst rather small. 
Under surface comparatively concave, covered by an 
epitheca and marked by strong concentric raised rings of 
growth. Two of these specimens I found at Columbus, O., 
and two obliterated ones by silicification are from Ohio Falls. 
. Corniferous limestone, Columbus, O. 
Cystiphyllum basalis, sp. nov. 
CRiae Veiio gs: Slightly reduced i. 
The characteristic feature of this corallum is that it 
begins with a much broader basis than its upper skeleton, 
