106 
Aug. F. Foerste 
county, also the one west of Indian Fields, in Clark county, and 
the one east of College Hill, in Madison county, all in Kentucky. 
Northward, in Ohio, it occurs at the top of the Whitewater as 
far as Dayton, in Montgomery county, and thence, westward, at 
various localities in Preble and Butler counties, as far as Richmond, 
in Indiana. 
If the fossiliferous strata overlying the Saluda bed in Ripley, 
Decatur, and Jennings counties, in Indiana, are to be regarded 
as of Whitewater age, then Strophomena sulcata may be traced 
at this horizon as far westward as Decatur county, and as far 
southward as the locality about 2^ miles south of Versailles, in 
Ripley county. 
If the fossiliferous strata immediately below the Saluda member, 
in western Kentucky, are to be regarded as Liberty, then Stro- 
phomena sulcata may be traced at this horizon as far south as the 
localities east of Jeffersontown and near Mount Washington, in 
Jefferson county; those in the eastern part of Bullitt county; east 
of Bardstown, in Nelson county; and east of Raywick, in the south- 
western part of Marion county. 
In the Saluda member, Strophomena sulcata occurs at Madison, 
Indiana, 7 feet above the great Columnaria horizon, which 
here forms the base. West of Weisburg, in the northwestern 
part of Dearborn county, it occurs near the middle of the sec- 
tion which here intervenes between the so-called shale layer near 
the base and the typical mottled limestone, which forms the top 
of the Saluda section. 
Strophomena sulcata is not known, at present, from the Elkhorn 
member. 
From these data it appears that Strophomena sulcata has a ver- 
tical range from the base of the middle or Clarksville division of 
the Waynesville member to the top of the Whitewater member of 
the Richmond. 
The most southern locality known at present at which Stro- 
phomena sulcata occurs is north of Dismukes Station, in Sumner 
county, Tennessee. Here it is found associated with Rhyncho- 
trema dentata, Leptaena richmondensis, Strophomena planumhona, 
and other fossils, at a horizon probably near the upper or Blan- 
chester division of the Waynesville bed. The nearest exposure 
in Kentucky, containing Strophomena sulcata, is located in the 
northeastern corner of Raywick, in Marion county, 95 miles 
