Notes on Cincinnatian Fossil Types 
297 
9. Dermatostroma papillatum, James 
{Plate I, Fig. 3) 
1878. Stromatopora papillata James, Paleontologist, 1, p. 1 
1910. Dermatostroma papillatum Parks, Univ. Toronto Studies, Geol. Series, 7, 
p. 30, Plate 23, Figs. 8-10 
Specimens bearing the label, Stromatopora papillata, and 
numbered 1553, occur in the James collection, at Chicago University. 
They are labelled as coming from Ohio and Indiana. In two of 
these specimens, the growth incrusts valves of Strophomena planum- 
hona, apparently from the Waynesville bed. Six or seven papillate 
occur in a length of 2 millimeters, measuring in the direction of the 
radiating striae of the Strophomena. In a third specimen growing 
upon Strophomena sulcata, presumably from the Waynesville or 
Liberty, seven papillae occur in a length of 2 millimeters, parallel 
to the radiating striae of the shell. Three additional specimens, 
bearing the same number, are regarded as belonging to Dermatos- 
troma glyptum (Foerste), a species occurring in the Whitewater 
division of the Richmond. 
The specimen illustrated in this bulletin was collected from the 
Clarksville division of the Waynesville member of the Richmond 
at Clarksville, Ohio, and is, attached to a valve of Byssonychia. 
The granules tend to be arranged in rows parallel to the radiating 
plications of the Byssonychia, but toward the margin of the shell, 
where the plications are quite broad, the linear arrangement of the 
papillae is much less in evidence, indicating that this arrangement 
is dependent upon the character of the surface markings of the 
shell upon which the Dermatostroma grows. From 5 to 6 papillae 
occupy a length of 2 millimeters. 
10. Dermatostroma scabrum, James 
{Plate I, Fig. IP) 
1879. Stromatopora scabra James, Paleontologist, 3, p. 18 
1910. Dermatostroma scabrum Parks, Univ. Toronto Studies, Geol. Series, 7, p, 
31, Plate 2Jf, Figs. 1-3. 
The cotypes of Stromatopora scabra were collected by Mr. W. 
H. Bean near Lebanon, Ohio; one from an horizon 10 to 20 feet below 
the large Platystrophia ponderosa (Mount Auburn) bed, and the 
other at a higher horizon. These horizons correspond evidently to 
the upper part of the Corryville member of the Maysville and to the 
Arnheim or Waynesville members of the Richmond respectively. 
