50 TENTH ANNUAL REPORT. 
which is erect-linear with thin murals and a broad first 
floor from which the calix ascends of equal diameter, one 
inch in width and one inch high. It looks like a minimized 
hollow tree-stump with root-spurs. Externally no epidermis 
can be observed but rudimentary cysts, as if a sarcoid tex- 
ture had once coated it and suggests a sea-anemone fixed by 
means of a skeleton to a rock. The inner cysts are of me- 
dium size. 
Corniferous limestone, Columbus, O. 
Cystiphyllum perlamellosum, sp. nov. 
(Plate V. Fig. 4. Slightly reduced). 
Corallum erect cylindrical, height probably 4-5 inch, 
only 24 inches of upper part preserved; diameter 1 inch., 
entirely denuded; depth of funnel-like calyx 14 inch. The 
lamella which characterize this Cystiphyllum give it the 
appearance of a coarse structured Zaphrentis interspersed 
with large elongated vesicles, one always filling the space 
between two lamellz. The corallum is well defined into 
four principal divisions, each division contains eleven well 
marked lamella. The apertural gap at a width of ?# inch 
shows no lamellae, but new insertions of rows of vesicles 
and is slightly ventricose ; the lateral gaps, also free of lamel- 
le and 3% inch in width, show one-sided insertions, while 
the central gap with two parallel lamellz, 1-3 wider apart 
than others, have much larger blisters. This is a most 
peculiar character among the Cystiphylloid family. 
Corniferous limestone, Ohio Falls. 
Cystiphyllum scyphus, sp. nov. 
(Plate V. Fig. 5. Slightly reduced.) 
Corallum 33 inch high, beginning with a broad hase 
on a shell and starting its calyx from the bottom, where it 
is narrow, then widening with the expansion of the walls 
which retain their equal thickness up to the margin. The 
calyx at its mouth has a diameter of 23 inches, marked 
interiorly by a number of diverging stout ruge starting 
