250 Bulletin Wisconsin Natural History Society. [ Vol. 9, No. 4 



Orthoceras wauwatosense Whitfield. Niagara (Sil.) 

 Ann. Kept. Wis. Geol. Surv., Whitfield, 1S79, p. 66. 

 Geol. of Wis., Whitfield, 1882, Vol. 4, p. 297, pi. 19, fig. 2. 



Obs. O erebristriatum, Meek and Worthen is identical 

 with this species. 

 Locality — Wanwatosa, Wis. 

 Type — Univ. of Wisconsin. 



Phragmoceras hoyi Whitfield. Niagara (Sil.) 



Ann. Kept. Geol. Surv. Wis., Whitfield, 1877, p. 86. 



Geol. of Wis., Whitfield, 1882, Vol. 4, p. 300, pi. 19, figs. 4, 5. 



Locality — Wauwatosa, Wis. 



Types — Univ. of Wisconsin. 



Phragmoceras hoyi var. compressum Whitfield. Niagara (Sil.) 

 Geol. of Wis., Whitfield, 1882, Vol. 4, p. 301, pi. 20, fig. 3. 

 Locality — Racine, Wis. 

 Type — Univ. of Wisconsin. 



Phragmoceras iabiatum Whitfield. Niagara (Sil.) 



Ann. Kept. Geol. Surv. Wis., Whitfield, 1877, p. 86. 



Geol. of Wis., Whitfield, 1882, Vol. 4, p. 302, pi. 20, figs. 1, 2. 



Locality — Ashford, Wis. 



Types — Univ. of Wisconsin. 



Phragmoceras nestor Hall. Niagara (Sil.) 



Eighteenth Ann. Kept, N. Y. State Cab. of Nat. Hist., Hall, p. 347, 



figs. 7, 8. 

 Geol. ofi Wis., Whitfield, 1S82, Vol. 4. p. 301, pi. 19, fig. 3. 

 Locality — Wauwatosa, W r is. 

 Types — Am. Mus. of Nat. Hist. 



Trochoceras costatum Hall. Niagara (Sil.) 

 Geol. of Wis., Hall, 1S60, p. 3. 



Twentieth Ann. Kept. N. Y. State Cab. of Nat. Hist., Hall, 1867, 

 p. 360, pi. 20A, fig. 1. 



Obs. There is no such plate or figure in the work cited. 

 See pi. 16 (7.). figs. 1, 2. 

 Twentieth Ann. Kept. N. Y. State Cab. of Nat. Hist., Revised 



Edition, Hall, 1868, p. 402. pi. 25, fig. 15. 

 Locality — Racine, Wis. 

 Type— Am. Mus. of Nat. Hist. 



