Fig. 1 
Fig. 2 
Fig. 3 
Fig. 4 
PLATE I. 
. STROMATOCERIUM GRANULOSUM James (=Str. huron- 
ense Billings) p 299 
Type of Alveolites granulosus James, No. 2250, in the James 
collection at Chicago University. From the Waynesville mem- 
ber of the Richmond group, at Clarksville, Ohio. 
. DERMATOSTROMA GLYPTUM Foerste p 298 
Type belonging to the collection of Dr. George M. Austin, o* 
Wilmington, Ohio. From upper part of Whitewater member 
of Richmond group, on Dutch creek, northwest of Wilmington 
Ohio. 
. DERMATOSTROMA PAPILLATUM James p 297 
Specimen growing on Byssonychia. From the Clarksville 
division of the Waynesville member of the Richmond group, at 
Clarksville, Ohio. 
. DERMATOSTROMA SCAB RUM James p 297 
Specimen growing on Byssonychia. From the Waynesville 
member of the Richmond group. Collection of Dr. George M. 
Austin, at Wilmington, Ohio. 
342 
