I T 9114 
The Ohio aturalist , 
PUBLISHED BY 
The Biological Club of the Ohio State University. 
- LIBR 
Volume XIV. JANUARY, 1914. No. 3. NEW , 
60TAP 
TABLE OF CONTENTS. 
Williams —A Starfish Found in the Whitewater Division of the Richmond on Blue QAR1 
Creek, Adams County, Ohio.221 
Hike— Tabauus longus, fulvulus and sagax. 225 
Shidei.er— The Upper Richmond Beds of the Cincinnati Group. 229 
Williams —Solanaceae of Ohio. . . 235 
A STARFISH FOUND IN THE WHITEWATER DIVISION OF 
THE RICHMOND ON BLUE CREEK, 
ADAMS COUNTY, OHIO. 
Stephen R. Williams. 
The fossil to be described was not found in place but the shales 
nearby yielded Byssonychiariehmondensisand Hebertella sinuata. 
The Clinton boundary was located on the same branch of the 
stream at an elevation (estimated) of forty feet above the point 
of discovery. 
The specimen consists of a part of the disc and of two neigh¬ 
boring arms of a starfish. The arms of this starfish were split 
vertically along the middle of the ambulacral grooves, separating 
the pairs of ambulacral plates one from the other. Enough of the 
disc remained to connect the two half anus together and no more. 
Fortunately the aboral side of the fragment of disc contains the 
madreporic body. 
The preservation of the fossil is ideal. Except for a certain 
amount of crushing of the aboral skeletal wall together the skeleton 
shows much as a similar section of a recent starfish does. 
Using the dimensions of the two part-arms and disc as a basis 
for measurement one can reconstruct the whole animal. I esti¬ 
mate that the starfish when living was approximately four inches 
in diameter from end to end of the rays on opposite sides. 
The remains of the disc and longer arm are 40 m. m. long, the 
disc and shorter arm 35 m. m. 
The pairs of ambulacral pieces which formed the ambulacral 
grooves in the specimen must have been directly opposite each 
other. This is indicated both by the shaping of the free ends of 
each ambulacral piece and by some fragmentary remains on the 
tips of some of the ambulacral pieces on the longest arm. These 
are very probably ends broken from the plates which formed the 
other half of the ambulacral groove. 
