2O4 THE CHICAGO ACADEMY OF SCIENCES. 



1870. Illaenus insignis. Hall, 20th Rep. N. Y. St.' Cab.^Nat. 

 Hist. (rev. ed.), p. 419, figs. 10-11, pi. 22, figs. 13-14~ 



Niagara: Waukesha and Milwaukee, Wis. 



1882. Illaenus insignis. Whitf., Geol. Wis., vol. 4, p. 305, pi. 21, 

 figs. 6-10. 



Niagara: Burlington, Racine, Waukesha, near Mil- 

 waukee and near Wauwatosa, Wis. 

 1887. Illaenus insignis. Foerste, 15th Ann. Rep. Geol. and Nat. 



Hist. Surv. Minn., p. 481. 



1895. Illaenus insignis. Foerste, Geol. Surv. Ohio, vol. 7, p. 525, 

 pi. 26, fig. 11. 



Clinton: Ohio. 



1904. Illaenus insignis. Kindle, 28th Ann. Rep. Dep. Geol. and 

 Nat. Res., Indiana, p. 479, pi. 22, figs. 1-5. 



Niagara: Connor's Mill, Delphi, Georgetown, Fishers - 



burg and Wabash, Ind. 

 1907. Illaenus insignis. Weller, This Bulletin, p. 215, pi. 17, figs, 1-5. 



Niagaran: Hawthorn, and Bridgeport, 111. 

 Illaenus insignis Meek, see Illaenus sprin&fieldensis Meek. 

 Illaenus ioxus Hall. 



1843. Bumastus barriensis. Hall, Geol. N. Y., pt. 4, p. 102, fig. 

 4, p. 101: tab. org. rem., 10, fig. 4, and 19 fig. 2. 



Niagara: Rochester, N. Y. 



1852. Bumastus barriensis,. Hall, Pal. N. Y., vol. 2, p. 302, pi. 

 66, figs. 1-15. 



Niagara: Lockport and Rochester, N. Y. 



1860. Bumastus barriensis. Roemer, Sil. Faun. West. Tenn., 

 p. 83, pi. 5, fig. 23. 



Silurian :, Tennessee. 



1862. Illaenus (Bumastus}' barriensis ? Hall, Geol. Surv. Wis., 

 vol. 1, p. 433 (no description). 



Niagara: Milwaukee, Waukesha, Racine, etc., Wis. 

 1865. Illaenus (Bumastus} barriensis. Hall, Adv. Sheets, 18th 

 Rep. N. Y. St. Cab. Nat. Hist., p. 28. 



Niagara: Racine, Waukesha, Wauwatosa, etc., Wis. 

 1867. Illaenus (Bumastus} barriensis. Hall, 20th Rep. N. Y. St. 

 Cab. Nat. Hist., p. 332. 



Niagara: Racine, Waukesha and Wauwatosa, Wis. 

 1867. Illaenus ioxus. Hall, 20th Rep. N. Y. St. Cab. Nat. Hist., 

 p. 387,- fig., pi. 22, figs. 4-11, pi. 23, fig. 1. 



Niagara: Wisconsin. 



1S70. Illaenus (Bumastus} ioxus. Hall, 20th Rep. N. Y. St. Cab. 

 Nat. Hist. (rev. ed.), p. 420, fig. 12, pi. 22, figs. 4-10. 



Niagara: Racine, Waukesha and Wauwatosa, Wis. 

 1882. Illaenus (Bumastus} ioxus. Hall, llth Rep. Dep. Geol. and 

 Nat. Hist., Indiana, p. 335, pi. 38, figs. 13-14. 



Niagara: Waldron, Ind. 



1882. Illaenus ioxus. Whitf., Geol. Wis., vol. 4, p. 304, pi. 21, 

 figs. 11-12. 



Niagara: Hartford, Pewaukee, Genesee, Racine, Green- 

 field, Waukesha, Grafton, and Sturgeon Bay, Wis. 

 Guelph: Cedarville, Wis. 



