368 Proceedings of the Ohio State Academy of Science. 



1873. Heniipronites crassiis. Meek and Worthen, Gaol. Surv. 111., Vol. 

 V, p. 570, pi. 25, fig. 12. 

 Upper Coal Measures : Lasalle, Illinois. 



1876. Hemipronites crenistria. White, Powell's Rep. Geol. Unita Mts.,. 



pp. 90, 91. 

 Lower and Upper Aubrey group : Utah. 



1877. Hemipronites crenistria. White, U. S. Geog. Surv. W. 100 Merid.,. 



Vol. IV, p. 124, pi. 10, fig. 9a. 

 Carboniferous : Utah, Nevada. 



1883. Streptorhyv.chus Richrnondi. Hall, Rep. N. Y. State Geol. for 



1882, pi. (10) 40, figs, 10, 11. 

 Coal Measures : Iowa. 



1884. Hemipronites crassus. White, Ind. Geol. Nat. Hist., 13th Rep. pt. 



11, p. 129, pi. 26, figs. 4-11. 

 Coal Measures : Indiana. 



1887. Heniipronites crassus. Herrick, Bull. Sci. Lab. Denison Univ.,. 



Vol. II, p. 50, pi. 2, fig. 19. 

 Coal Measures : Flint Ridge, Ohio. 



1888. Strefforhynchus crenistria. Kej^es, Proc. Acad. Nat. Sci. Phil., p.. 



229. 

 Lower Coal Measures : Des Moines, Iowa. 



1891. Streptorhynchus crassnm. Whitfield, Ann. N. Y. Acad. Sci., Vol._ 



V, p. 580, pi. 13, figs. 11, 12. 

 Maxville limestone : Ohio. 



1892. Derbya crassa. Hall and Clarke, Int. to Study of Brach., pt. I,. 



pi. 17, figs. 1-4, 9. 

 Upper Coal Measures : Missouri, Iowa. 

 1892. Derbya crassa. Hall and Clarke, Pal. N. Y., Vol. VIII, pt. I, pL 

 10," figs. 10, 11; pi. IIA, figs. 28-38; pi. IIB, figs. 23, 24; pi. 20,. 

 figs. 12, 13. 

 L'^pper Coal Measures : Missouri, Iowa. 



1894. Streptorhynchus crenistria. Keyes, Mo. Geol. Surv., Vol. V, p. 67,. 



pi. 38, figs. 8a-h. 

 Coal Measures : Missouri. 



1895. Streptorhynchus crassum. Whitfield, Geol. Surv. Ohio, Vol. VII,. 



p. 468, pi. 9, figs. 11, 12. 

 Maxville Limestone : Ohio. 

 1897. Derbya crassa. Smith, Proc. Am. Phil. Soc, Vol. XXXV, p. 28. 



Coal Measures : Indian Territory, Arkansas. 

 1900. Derbya crassa. Beede, Univ. Geol. Surv. Kansas, Vol. VI, p. 62,. 

 pi. '8, figs. 11, lib. 

 Upper and Lower Coal Measures : Fort Scott, Kansas City, Law- 

 rence, Topeka, Kansas. 



