'240 Bulletin Wisconsin Natural History Society. I Vol. 9, No. 4. 



Trochonema umbiiicatum Hall. Trenton (Orel.) 



Pal. of New York, Hall, 1847, Vol. 1, p. 175, pi. 38, fig. lg. 



Obs. Other specimens of the series of types are from 

 N. Y. State. 

 Locality — Mineral Point, Wis. 

 Type — Am. Mus. of Nat. Hist. 



Turritella sp. Conrad. Trenton (Orel.) 



Proc. Acad, of Nat. S.ci., Phila., Conrad, 1843, Vol. 1. 

 Locality — Mineral Point, Wis. 

 Types— Am. Mus. of Nat. Hist. 



CEPHALOPODA. 



Actinoceres abnorme (Hall.) Niagara (Sil.) 



Orthoceres abnorme, Twentieth Ann. Kept. N. Y. State Cab. of 



Nat. Hist., Hall, 1867, p. 355, pi. 18 (9.), fig. 10. 

 Actinoceres abnormis, Bull. Am. Mus. of Nat. Hist.. Whitfield, 



1S99, p. 170. 

 Locality — Racine, Wis. 

 Type— Am. Mus. of Nat. Hist. 



Cyrtoceras brevicorne Hall. Niagara (Sil.) 



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



p. 356, pi. 18 (9.), figs. 8, 9. 

 Locality — Racine, Wis. 

 Types — Am. Mus. of Nat. Hist. 



Cyrtoceras corniculum Hall = Cyrtoceras tenuistriatum, 



Cyrtoceras dardanus Hall. Niagara (Sil.) 



Geol. Surv. Wis., Rept. of Prog., Hall, 1860, p. 43. 



Eighteenth Ann. Rept. N. Y. State Cab. of Nat. Hist., Hall, 1864, 



p. 349, pi. 17 (8.). figs. 3-5. 

 Locality — Wauwatosa, Wis. 

 Types — Am. Mus. of Nat. Hist. 



Cyrtoceras eugium (Hall.) Trenton (Ord.) 



Geol. Surv. Wis., Rept. of Prog., Hall, 1861, p. 40. 



Mem. Am. Mus. of Nat. Hist,, Whitfield, 1895, Vol. 1, Pt. 2, p. 66, 



pi. 9, figs. 3, 4. 

 Locality — Beloit, Wis. 

 Types — Am. Mus. of Nat. Hist. 



