THE NATURAL HISTORY SURVEY. 



1867 Encrinurus . sp. Hall, 20th Rep. N. Y. St. Cab. Nat. 



Hist., p. 334. 



Niagara: Racine, Wis. 



1867. Encrinurus nereus. Hall, 20th Rep. N. Y St. Cab. Nat. 

 Hist., p. 375, pi. 21, fig. 15. 



Niagara: Racine, Wis. 



1870. Encrinurus nereus. Hall, 20th Rep. N. Y. St. Cab. Nat. 

 Hist. (rev. ed.), p. 425, pi. 21, fig. 15. 



Niagara: Racine, Wis. 



1878. Cryptonymus nereus. Vogdes, Monog. Gen. Zethus, Cybele 

 etc., p. 24, pi. 3, fig. 17. 



Niagara: Racine, Wis. 



1887. Encrinurus nereus. Foerste, Bull. Sci. Lab. Den. Univ. 

 vol. 2, p. 102. 



Racine beds, Wisconsin. 

 Encrinurus ornatus H. & W. 



1852. Cybele punctata. Hall, Pal. N. Y. vol. 2, p. 297, pi. A66 

 figs. la-Ik. 



Clinton: Orleans and Niagara Cos., N. Y. 



1875. Encrinurus ornatus. H. & W., Pal. Ohio, vol. 2, p. 154, pi. 

 6, fig. 16. 



Niagara : Eaton and Yellow Springs, Ohio. 



1878. Cryptonymus ornatus. Vogdes, Monog. Gen. Zethus, Cybele,. 

 etc., p. 23. 



Niagara: Eaton and Yellow Springs, Ohio; Medina- 



Reynold's Basin and Niagara, N. Y. ^_ 



1887. Encrinurus ornatus. Foerste, Bull. Sci. Lab. Den. Univ., 

 vol. 2, p. 102. 



Guelph limestone: Ohio. 



1887. Encrinurus punctatus. Foerste, Bull. Sci. Lab. Den. Univ., 

 vol. 2, p. 103. 



Clinton : New York. 



1890. Encrinurus punctatus. Foerste, Proc. Bost. Soc. Nat. Hist., 

 vol. 24, p. 269. 



Clinton: Collinsville, Ala., Cumberland Gap, Tenn. 

 1901. Encrinurus ornatus. Grabau, Bull. N. Y. St. Mus., No. 45, 

 vol. 9, p. 225, fig. 157. 



Clinton: Niagara and Lockport, N. Y. 



1901. Encrinurus punctatus. van Ingen, School of Mines Quart., 

 vol. 23, p. 66. 



Silurian: St. Clair Spring, Independence Co., Ark. 

 Encrinurus punctatus (various authors), see Encrinurus ornatus H. & 



W., and Encrinurus threshed Foerste. 

 Encrinurus thresheri Foerste. 



1887. Encrinurus thresheri. Foerste, Bull. Sci. Lab. Den. Univ., 

 vol. 2, p! 101, pi. 8, fig. 26. 



Clinton: Ohio. 



1895. Fncrinurus punctatus. Foerste, Geol. Surv. Ohio, vol. 7,. 

 p. 531, pi. 27, fig. 26. 



Clinton: Ohio, Hanover, Ind. 



