PLATE II 
Fig. 1, Agelacrinus pileus, Hall. The specimen has sagged downward so as to 
expose the peripheral ring strongly along the upper part of its outline; but, along 
the lower part of this outline the peripheral ring is almost concealed by the sagging 
theca. Covering plates with a spinous prolongation on the proximal side. Peri- 
stomial plates ; and apparently a small opening between plates P, 5, and X (See 
diagram 5B on Plate I) are clearly exposed. Several of the plates belonging to the 
inner band of the peripheral ring are strongly exposed along the upper side of the 
theca on account of the drag produced by the sagging theca. Specimen No. 
13266-1-t, in the American Museum of Natural History, in New York City 
Enlarged 4 diameters. From Cincinnati, Ohio. Corryville member of Maysville. 
Fig. 2. Agelacrinus pileus, Hall. Specimen with surface very minutely pitted, 
the pits showing in the photograph but not in the engraving. The spinous pro- 
longations along the proximal edges of the covering plates so little in evidence 
that the tips of the latter, along the median line of the ray, appear like alter- 
nating V-shaped terminations. Peristomial plates clearly defined. Contact be- 
tween plate X^, and plates P and 5 loosened. Anal pyramid apparently consisting 
of imbricating ])lates, the tips of the inner plates being exposed. Specimen No. 
13268-1-a, in the American Aluseum of Natural History, in New A^ork City. 
Enlarged 5 diameters. From Cincinnati, Ohio. Corryville member of Maysville. 
Fig. 3. Agelacrinus pileus, Hall. View of lower surface of upper or oral part of 
theca, showing substomial cavity, with the anterior margin clearly defined. The 
floor plates of rays 1, 2, and 3, entirely conceal the basal extensions of the covering 
plates. Specimen No. 13266-1-x, in the American Museum of Natural History, in 
New Y'ork City. Enlarged 4.4 diameters. From Cincinnati, Ohio. Corryville 
member of Maysville. 
Fig. 4. Agelacrinus pileus, Hall View of lower surface of upper or oral part 
of the theca. This is the speciman figured by Miller and Faber, in the Journal of 
the Cincinnati Society of Natural History, vol. XV, pi. I, fig. 10. The basal exten- 
sions of the covering plates are exposed best on rays 1, 2, and 3. The floor plates 
are seen at the proximal ends of rays 3 and 4; these plates are very thin and the 
sutures are not well shown. The entire specimen appears far less robust, as seen 
from the interior, than the specimen represented by figure 3 on this plate. The 
inner termination of the posterior peristomial plate is well exposed. Specimen No. 
8825, Faber Collection, in Walker Museum, at Chicago University. Enlarged 4.5 
diameters. From Cincinnati, Ohio. Corryville member of Maysville. 
Fig. 5. Lichenocrinus affinis. Miller. Two specimens of the basal attachment 
disc of some crinoidal body, and the upper surface of the attachment film, as seen 
after the removal of the plates forming the upper part of this disc. This attach- 
ment film is radiately striated. Type, forming specimen No. 8810, in the Faber 
Collection at Chicago University. Enlarged 4.5 diameters. Probably from upper 
or Blanchester division of Waynesville, at Lebanon, Ohio. 
Fig. 6. Lichenocrinus subaequalis, Foerste. Types, two specimens. Enlarged 
3 diameters. From north of Rogers Gap, Kentucky. Rogers Gap member of 
Cynthiana formation. 
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