Preliminary ISfotes on Cincinnatian and Lexington Fossils 307 
Streptelasma dispandum, sp. nov. 
(Plate IX, Figs. 4, A B.) 
In the Upper or Blanchester division of the Waynesville bed, 
along the creek southeast of the railroad station at Moores Hill, 
Indiana, a large robust form of Streptelasma occurs which differs 
from Streptelasma vagans chiefly in its more rapid rate of expan- 
sion. This is conspicuous especially in young specimens. When 
fully mature some of the largest specimens resemble Streptelasma 
canadensis in form much more closely than is true in case of 
typical specimens of Streptelasma vagans, from the Whitewater 
beds. 
Geological position. Abundant in the Blanchester division of 
the Waynesville bed at Moores Hill, Indiana. Also, at the same 
horizon on the bluff east of Laughery creek, nearly a mile north- 
east of Versailles; along the creek, half a mile south of Olean; and 
along the creek, north of Canaan; all in Indiana. Specimens of 
the same type have been found at corresponding horizons in Ohio, 
but no attempt has been made to work out their geographical 
distribution. 
Streptelasma divaricans, Nicholson. « 
(Plate X, Figs. 4, A, B, C, D, E.) 
Streptelasma divaricans appears to be a small, sessile species, at- 
tached to shells or other ob jects. Usually two or three specimens are 
attached to the same shell, at about the same point, but sometimes 
more than a dozen may be found in the same cluster. The indi- 
vidual corals are inverted conical in shape. Where growing in 
clusters, the sides usually are more or less adnate, and may be 
deformed by pressure. The area of attachment usually is more 
or less oblique to the base, preserving the conical form of the coral 
on its free side. Occasionally a radicular expansion of the 
edges of the area of attachment is noticed. Specimens may be 
found in which the corallites are free at the top, but the presence 
of lateral gemmation has not been demonstrated in any specimens 
at hand. 
Geological position. In the original description of this species 
one specimen is described as attached to the brachial valve of 
Rhynchotrema dentata. Although Rhynchotrema dentata occurs At 
