154 Trans. Acad. Sci. of St. Louis 
Pentremites decipiens decurtatus ULRICH. 
.1917, Kentucky Geological Survey, Formations of the Chester 
Series, p. 255, pl. 5, figs. 34-35. 
Gasper oolite; Breckenridge County, Kentucky and Cowen, 
Tennessee. 
Pentremites decussatus SHUMARD. 
1860, Transactions, St. Louis Academy of Science, vol. 1, p. 242, 
pl. 9, figs. 6 a-b. 
Base of Carboniferous; Button-Mould Knob, 7 miles south of 
Louisville, Kentucky. 
Pentremites decussatus SHUMARD, WELLER 
1909, Bulletin, Geological Society of America, vol. 20, 1909, pp. 
288-289, pl. 11, figs. 28-29 
Fern Glen formation; Fern Glen, St. Louis County, Missouri. 
Pentremites divergens CLARK. 
1917, Bulletin Museum Comparative Zoology, vol. 61, No. 9, p. 
365, plate 1, figs. 7-10. 
Miss. Quadrant formation; Old Baldy, near Virginia City, Mon- 
Pentremites elegans Lyon. 
1860, Transactions, St. Louis Academy of Science, vol. 1, p. 
632, pl. 20, figs. 4 a-c 
Third limestone of Millstone-grit beds; Grayson Springs and 
three miles north of Litchfield, Grayson Springs, Kentucky. 
Pentremites elegans Lyon, WHITFIELD. 
et Annals New York Academy of Science, p. 577, pl. 13, 
g. 4. 
Pentremites elegans Lyon, WHITFIELD. 
1893, Ohio Geological Survey, vol. 7, p. 466, pl. 9, fig. 4. 
Maxville limestone; Newtonville, Ohio. 
Pentremites elegans Lyon, HaMBAcH. 
1903, Transactions, St. Louis Academy of Science, vol. 13, p. 37. 
Pentremites elegans Lyon, Woop. 
1909, Bulletin 64, U. S. National Museum, pp. 14-15, pl. 2, figs. 
10, 21, Te 
Sequatchie Valley, Sparta, Tennessee; Mount Sano, Alabama. 
Pentremites elegans Lyon, Morse. 
1911, Proceedings, Ohio Academy of Science, vol. 5, No. 7, p. 
60, fig. 2. 
Maxville limestone. 
