New and Little Known American Paleozoic Ostracoda. 211 
Left. valve very elongate, acuminate behind, narrowly rounded 
in front, with the dorsal side curved uniformly, about equal to a 
one fourth segment of a circle; ventral side very gently convex 
except at the posterior extremity where it bends a little downward 
to form a more acute point. Surface smooth, strongly convex, 
with the, thickest part very near the center. Ventral edge curving 
inward slightly, indicating that the opposite valve overlapped. 
Position and locality: Lower Waverly, Moots’ Run, near 
Granville, Ohio. The valve is attached to a fragment of a ferrug- 
inous nodule received from Mr. E. M. Cooper. 
