1911] Teller, Fossils from, the Palceozoic Formations. 189 



Cystostylus typicus Whitfield. Niagara (Sil.) 



Ann Kept. Geo!. Surv. Wis., Whitfield, 1879, p. 64. 



Geol. of Wis., Whitfield. 1882, Vol. 4, p. 274, pi. 14. figs. 8, 9. 



Locality — Cato, Wis. 



Type — Univ. of California. 



Dendrograptus hallianus (Prout.) Potsdam. 



Oraptolithus hallianus, Am. Jour, of Sci., Prout, 1851, 2nd Series, 



Vol. 2, p. 189, pi. 190, figs 1 c-f. 

 Oraptolithus (Dendrograptus) hallianus, Geol. of Wis., Hall, 1861, 



Vol. 1, p. 21, figs. a-c. 

 Dendrograptus hallianus, Twentieth Kept. N. Y. State Cab. of 



Nat. Hist., Hall, 1867, p. 177, fig 10. 

 Locality — Osceola Mills, Wis. 

 Type— Am. Mus. of Nat. Hist. 



Dictyonema neenah Hall. Trenton (Ord.) 



Geol. Surv. Wis., Kept, of Prog., Hall, 1861, p. 17. 



Mem. Am. Mus. of Nat. Hist., Whitfield, 1895. Vol. 1, Pt. 2. p. 47. 



pi. 5. fig. 13. 

 Locality — Appleton, Wis. 

 Type— Am. Mus. of Nat. Hist. 



Diphyphyllum obsoletum Hall. Lorraine (Ord.) 



Lake Superior Land District, Hall. 1851, Pt. 2, p. 213, pi. 29, 



figs. 2a b. 

 Locality — Green Bay, Wis. 

 Type— Am. Mus. of Nat. Hist. 



Diplograptus peosta (Hall.) Trenton (Ord.) 



Oraptolithus (Diplograptus) peosta, Geol. Surv. Wis., Rept. of 



Prog., Hall. 1861, p. 17. 

 Diplograptus peosta, Mem. Am. Mus. of Nat. Hist., Whitfield, 1895, 



Vol. 1, Pt. 2. p. 47, pi. 5, fig. 12. 

 Locality — ?. 

 Type — Am. Mus. of Nat. Hist. 



Favosites niagarensis Hall. Niagara (Sil.) 



Pal. of New York, Hall, 1852, Vol. 2. p. 125, pi. 34 A (bis)., figs. 4f, 



g., obs. Other specimens of the series of types are from New 



York State. 

 Locality — Milwaukee, Wis. 

 Type— Am. Mus. of Nat. Hist. 



