Fauna of the Morrow Group 
229 
1914. Deltopecten occidentalism Price, West Va. GeoL Surv., Preston 
County Rep., p. 525. 
Ames limestone: Portland district, east side of Cheat River, 0.6 
mile east of Trowbridge, near head of ravine; Reno district, 0.5 
mile northwest and 2.6 miles east of Pellowsville. 
Pine Creek limestone: Grant district, 0.8 mile south of Brandon- 
ville. 
Brush Creek limestone: Grant district, 2.1 miles north of Hopewell 
Church, 1.2 miles southeast of Brandonville, and 0.9 mile north- 
east of Bruceton Mills; Vallet district, 2.1 miles east of Reeds- 
ville. 
A number of fragmentary specimens from the localities noted 
below seem to belong to this common Pennsylvanian species 
which has been frequently observed in the Mississippi valley. 
They are smaller than the majority of the forms thus referred 
as the material at hand represents shells which could not have 
been longer than 12 to 15 mm. Yet the outlines of the auricu- 
lations and the ornamentation of the surface seem identical 
with those of the typical forms. 
Horizon and locality. Hale formation: East Mountain, Fay- 
etteville, Arkansas (Station 136). Kessler limestone: East 
Mountain, Fayetteville, Arkansas (Station 209). 
Genus PALAEOLIMA Hind 
Palaeolima inequicostata n. sp. 
Plate XV, figure 18, 
Description, Shell below medium size, transversely oblique, 
sub-oval in outline, length (along a line which if extended would 
intercept the hinge-line about 12 mm. in front of the beak) 
greater than height, hinge-line two-fifths as long as greatest 
length; posterio-dorsal margin nearly straight, oblique, meet- 
ing the ventral margin in a broad curve ; ventral margin convex, 
probably somewhat truncated in front; left valve moderately 
gibbose, surface sloping abruptly from the umbo toward the 
auriculations and more gently toward the ventral margin; ears 
small, triangular, depressed, beak situated behind the middle, 
its sides converging at an angle of about 90° ; surface of internal 
cast ornamented by radiating, angular costae separated by 
rounded striae, the posterior costae being the stronger and 
