Greger-Eublastoidea 173 
Pentremites subspinosus HAMBACH. 
1880, Transactions, St. Louis Academy of Science, vol. 4, p. 154, 
pl. B, fig. 1. 
Kaskaskia limestone; Chester, Illinois. 
Pentremites subtruncatus HALL. 
1858, Report of the Geological Survey of Iowa, vol. 1, pt. 2, 
p. 485, pl. 1, fig. 4. 
“Calcareous shale of age of Hamilton group of New York”; 
New Buffalo, Iowa. 
Pentremites sulcatus Ro—EMER, SHUMARD. 
1853, Marcy’s Expl. Red River of Louisiana, 1852, p. 200, Wash- 
ington. 
Lower Carboniferous; Washington and Crawford Counties, Ar- 
kansas. 
Pentremites sulcatus ROEMER, SHUMARD. 
1858, Transactions, St. Louis Academy of Science, vol. 1, No. 2, 
p. 243, 246. 
Chester Series; Chester, Illinois. 
Pentremites sulcatus RoEMER, LYON and CAssEDAY. 
1860, Proceedings, American Academy, vol. 4, p. 298. 
Pentremites sulcatus ROEMER, SHUMARD. 
1865, Transactions, St. Louis Academy of Science, vol. 2, No. 2, 
p. 385. 
Pentremites sulcatus (ROEMER), KEYES. 
1894, caro Geological Survey, Paleontology, vol. 4, p. 135, 
pl. 18, fi a-b. 
Kadkankin: meee” St. Marys, Missouri. 
Pentremites sulcatus RoEMER, HAMBACH. 
1903, Transactions, St. Louis Academy of Science, vol. 13, p. 39, 
pl. 6, figs. 1-12. 
Pentremites sulcatus RozEMER, ROWLEY. 
1903, Contributions to Indiana Paleontology, vol. 1, pt. 12, p. 
116, pl. 3 5. 
Kaskaskia Liiestiads: Hardin County, Kentucky. 
Pentremites sulcatus RoEMER, Woop. 
1909, United States National Museum, Bull. 64, pp. 16-17, pl. 3, 
figs. 14, 15, 16 
Base of Look-out Mountain, Cherokee County, Tennessee. 
