Strophomena and Other Fossils 
119 
feet below the top. At Wyoming, in the same county, it is seen 
18 feet below the top. At Wyoming and Concord, the occurrences 
of Leptaena richmondensis are distinctly below the Strophomena 
neglecta horizon. It is probable that at these localities Lep- 
taena indicates approximately the base of the Blanchester divi- 
sion of the Waynesville. At this horizon, Leptaena has not been 
found, so far, south of Fleming county, in east-central Kentucky. 
On the western side of the Cincinnati geanticline, in Indiana, 
Leptaena richmondensis occurs in the upper or Blanchester divi- 
sion of the Waynesville, from the most northern exposures south- 
ward to Versailles, in Bipley county; north of Canaan, in the 
central part of Jefferson county; and at Madison (plate I, Figs. 
6 B, C), in the same county. At the more southern localities 
in Indiana it is far less abundant than northward. At Milton, 
in Kentucky, opposite Madison in Indiana, Leptaena occurs 
between 19 and 30 feet below the lowest layers containing Di- 
northis retrorsa, in strata probably belonging to the upper division 
of the Waynesville. 
Two and a half miles northwest of Brownsboro, in Oldham 
county, Kentucky, Leptaena richmondensis occurs 8 feet be- 
low the lowest strata containing Dinorthis subquadrata, and 
also 17 feet lower, below a horizon at which Calapoecia crihri- 
formis occurs loose. Three miles west of Brownsboro, in the 
same county, Leptaena is found 10 feet below the Columnaria 
calycina horizon, in strata regarded as belonging to the upper 
part of the Waynesville member. 
Leptaena richmondensis is widespread in the lower part of the 
Liberty member, especially a short distance above the upper 
Hehertella insculpta horizon. At this horizon, it is found through- 
out the Ohio areas of exposure as far south as Concord, in Lewis 
county, Kentucky; and Springdale, in Mason county. At Sun- 
set, in Fleming county, it occurs at the upper Hehertella msculpta 
horizon. At Owingsville, in Bath county, it occurs just below 
the Dinorthis subquadrata horizon. West of Spencer, in Alont- 
gomery county, it occurs associated with Dinorthis subquadrata, 
near the base of the Liberty. 
In Indiana, Leptaena richmondensis occurs in the lower part 
of the Liberty, especially a short distance above the upper 
Hehertella insculpta horizon, as far south as half a mile south of 
Clean, in the southeastern part of Ripley county. At Madison, 
