PLATE III. — Continued 
Fig. 7. LINGULA COVINGTONENSIS Hall and Whitfield p 305 
The lower left margin of this figure should be rounded like the 
margin on the right side. Type, No. 139, in the James collec- 
tion at Chicago University. Figure, slightly enlarged, prepared 
from cast of more or less exfoliated interior of valve. Upper 
part of the Cynthiana group, at West Covington, Kentucky. 
Fig. 8. CRANIA ALBERSI Miller and Faber .p 322 
A, enlarged 2 diameters; B, enlarged 4 diameter. Type, No. 
8863, in the Faber collection at Chicago University. In the 
Economy member of the Eden group, at Cincinnati, Ohio. 
Fig. 9. CRANIA ASPERULA James (=Cr. scabiosa Hall) p 314 
A, natural size, B, enlarged. Posterior margin along upper right 
hand margin of figure. Photographed obliquely so as to show 
the plications crossing the upper valve. Type in the Welch 
collection, in Wilmington college, at Wilmington, Ohio. Base 
of Liberty member of Richmond group, at Clarksville, Ohio. 
Fig. 10. CRANIA ALTERNATA James (=Cr. scabiosa Hall) p 315 
A, natural size; B, enlarged. Type, No. 1557, James collection, 
Chicago University. Upper or Blanchester division of Waynes- 
ville member of Richmond group, at Blanchester, Ohio. 
Fig. 11. CRANIA SO Cl ALIS Ulrich p 321 
A, group attached to crinoid stem, natural size; B, enlarged. 
Typical specimen. No. 8868, in the Faber collection at Chicago 
University. Eden group, atCincinnati, Ohio. 
Fig. 12. TREMATIS ? FRAGILIS Ulrich p 311 
Specimen figured as Trematis punctostriata by Hall and Whit- 
field, Pal. Ohio, 2, 1873, pi. 1, Fig. 9 (not Tr. punctostriata 
Hall, 1873, from Clifton, Tennessee). No. 102, James collection. 
Chicago University. Probably from Eden group, Cincinnati, O. 
Fig. 13. CRANIA MULTIPUNCTATA Miller (=Crania scabiosa Hall).p 313 
A, natural size; B, enlarged. Type, No. 8869, in Faber collec- 
tion at Chicago University. From the upper half of the Mays- 
ville group at Cincinnati, Ohio. 
Fig. 14. TREMATIS FRAGILIS Ulrich p 311 
Pedicel valve. Probably from the Eden group, Cincinnati, O. 
Fig. 15. CRANIA COSTATA James (=Cr. scabiosa Hall) p 314 
Posterior margin, near lower left hand margin of figure. Photo- 
graphed so as to show the plications on the upper valve. Type, 
in Welch collection, deposited in Wilmington college, at Wil- 
mington, Ohio. Probably from some part of the Richmond 
group, near Clarksville or Wilmington, Ohio. 
Fig. 16. TREMATIS FRAGILIS Ulrich p 311 
Brachial valve, associated with pedicel valve, figure 14. 
Fig. 17. LINGULOPS NORWOODI James. 
Type of Lingula norwoodi James, No. 623, in James collection 
at Chicago University. A, slightly reduced; B, enlarged 2 diame- 
eters. From the upper part of the Cynthiana formation at 
West Covington, Kentucky, opposite Cincinnati, Ohio. 
346 
