162 Trans. Acad. Sci. of St. Louis 
Pentremites longicostalis HALL. 
1860, Supplement to vol. 1, pt. 2, Geological Report of Iowa, 
p. 85 
Warsaw limestone; Warsaw, I]linois. 
Pentremites lycorias Hatt. 
1862, 15th Report, State Cabinet of Natural History of New 
pelSl. 
Hamilton group; Western New York. 
Pentremites lyoni ULRiIcH. 
1917, Kentucky Geological Survey, Formations of the Chester 
Series, p. 262, pl. 7, figs. 27- 
Golconda, Glen Dean cad Okaw ole Kentucky, Illinois, 
Tennessee, Alabama, and Georg 
Pentremites lyoni gracilens ULRIcH. 
1917, Kentucky Geological Survey, Formations of the Chester 
Series, p. 263, pl. 7, figs. 30-32 
Golconda, Glen Dean, Okaw ss Birdsville formations; Ken- 
tucky, Illinois, Tennessee, and Alabama. 
Pentremites maia HALL. 
1862, 15th Report, State Cabinet of Natural History of New 
York, p. 150, pl. 1, fig. 10. 
Hamilton group; ice New York. 
Pentremites maccalliei SCHUCHERT. 
1906, Proceedings, United States National Museum, vol. 30, pp. 
759-760, text figures 1, 2, 3. 
Bangor limestone; Nickajack Gulch, Cole City, Georgia. 
Pentremites melo OWEN and SHUMARD. 
1850, Journal, Philadelphia sho of Natural Sciences, vol. 
2, pt. 1, p. 65, pl. 17, fig. 4 a- 
Pentremites melo OWEN and SHUMARD. 
1852, Report of a Geological Survey of Wisconsin, Iowa and 
Minnesota by David Dale Owen, p. 592, pl. V, figs. 14 a, b, c. 
Mississippian, Burlington limestone; Burlington, Iowa. 
Pentremites melo var. projectus MEEK and WoRTHEN. 
1861, Proceedings, Philadelphia Academy of Natural Sciences, 
va 
p- 14 
Burlington limestone; Burlington, Iowa. 
