341 
[Foerste. 
Cyathophyllum facetus, sp. nov. 
(plate IX, FIG. 8.) 
At the roadside quarry north of the Soldiers’ Home grounds near 
Dayton, Ohio, are found numerous small specimens of a species of 
Cyathophyllum similar in type to the form just described, but dif- 
fering from the same in the fact that at the same period of growth 
the variety Daytoneyisis has a much greater diameter, while the rate 
of increase in size is, of course, also much greater. Most of the 
specimens found do not exceed 25 mm. in length. The polyp in- 
creases quite regularly in size, a few transverse wrinkles or annu- 
lations being occasionally found near the upper extremity. The 
apertural side is always convex in outline, and the opposite side, 
concave, excepting occasionally near the top where transverse 
wrinkles or annulations are present. The rate of curvature is 
about that of the more elongate forms of C. celator var. Dayton- 
ensis although much less than the more turbinate and more typical 
forms of that species. 
Exteriorly the position of septa is indicated by longitudinal ribs, 
which may be quite distinct or even obsolete. Transverse striae 
are also sometimes present, though in none of our specimens very 
conspicuous. The mouth of the calyx is more or less oblique. 
The number of septa varies from fifty to sixty- five, five septa occupy- 
ing a width of about 2.8 to 3 mm. The calyx walls descend abruptly, 
the calyx having a depth of about 4 or 5 mm. On the apertural 
side is a septal fovea towards the border of which two or three 
septa are intercalated. Half the septa are of small size, not even 
reaching the base of the calyx as a rule. On each side the septa 
are crenulated ; of these crenulations five come in a length of 1.8 
mm. At the centre the septa are somewhat twisted. Excepting 
for the much more rapid increase of growth in C. celator , this spe- 
cies might be associated with that form. Specimens of this tj^pe 
are also found at Todd’s Fork, near Wilmington, Ohio. 
Cyathophyllum. 
Two casts found at Cumberland Gap, Tennessee, present the 
characters of this genus. One of these is 10 mm. long, 10 mm. 
wide at the mouth of the calyx, has twenty-six large septa and 
twenty-six smaller ones extending two-thirds of the distance down 
the cast. The other specimen is 9 mm. long and 9 mm. broad ; 
