Distribution oi Brachiopoda.—Foerste. 245 
voir creek, north of Lebanon, Ohio ; also seven miles north- 
east of Lebanon, on Lick run, opposite the mouth of Caesar 
creek; along Short creek, below Arnheim, 42 miles south- 
east of Lebanon ; about three miles south of Maysville, Ken- 
tucky, along the railroad, and 22 miles south of Arnheim. 
In Indiana, Leptaena rhomboidalis occurs at the Dinorthis 
retrorsa horizon about 40 miles west of Lebanon, and five 
miles east of Brookville, on Big Cedar creek, a short distance 
south of the pike to Mount Carmel ; also 23 miles south 
of Erookville, about a mile southeast of Sparta, east of the 
Sparta fork of Allen branch ; 33 miles southwest of Sparta, 
■opposite Madison, along the pike from Milton, Kentucky, 
to Bedford, at the head of the first gully crossed by the 
pike, about on the same level as the bridge, about a mile 
south of the Ohio river; about 20 miles southeast of Madi- 
son, about a mile east of Pendleton, Kentucky, on the Louis- 
ville and Nashville railroad, at the second railroad cut east 
of a house on the north side of the railroad. The associa- 
tion of Leptaena rhomboidalis with Dinorthis retrorsa has not 
been noted, so far, at any locality south of those men- 
tioned as occurring near Maysville and Pendleton, Ken- 
tucky, but this is merely because Dinorthis retrorsa has not 
been detected farther southward. Leptaena rhomboidalsi 
continues to occur at the same horizon at least as far as 
Lebanon, Kentucky. Dinorthis retrorsa is listed by Linney 
in his Xotes on the Rocks from Central Kentucky, published 
by the Kentucky Geological Survey in 1882; but it is not 
stated at what locality it was found, although the list pre- 
sumably includes only fossils from the counties lying be- 
tween Madison and Marion county. In the Geology of 
Marion county, by W. T. Knott, and published in 1885, how- 
ever, the name does not occur. 
There is no very good reason for doubting the accuracy 
of the identification of Dinorthis retrorsa from central Ken- 
tucky. The fossil has a very characteristic form and should 
not readily be mistaken. At any rate, Dinorthis retrorsa 
has been found associated with Leptaena rhomboidalis as 
far south as the landing at Clifton, on the Tennessee river, 
in western Tennessee. 
Another fossil having- a considerable distribution at the 
