248 Bulletin Wisconsin Natural History society. [Vol. 9, No. 4 



Orthoceras anellum Hall = Orthoceras anellus. 



Orthoceras anellus (Conrad.) Trenton (Ord.) 



Orthoceras anellus, Proc. Acad. Nat. Sci., Phila., Conrad, 1843, 



Vol. 1, p. 334. 

 Orthoceras anellum, Geo] of Wis., Whitfield, 1S82, Vol. 4, p. 226, 



pi. 7, fig. 13. 

 Locality — Mineral Point, Wis. 

 Type — Am. Mus. of Nat. Hist. 



Orthoceras clarkei Cleland. Hamilton (Dev.) 



Wis. Geol. and Xat. Hist. Surv., Cleland. 1911, Bull. 21. p. 134, 



pi. 42, figs. 2, 2A. 

 Locality — Milwaukee, Wis. 

 Types— Collection of Edgar E. Teller. 



Orthoceras columnare Hall = Orthoceras orus. 



Orthoceras < Actinoceras) beloitense Whitfield, Trenton (Ord.) 

 Ann. Eept. Geol. Surv. Wis.. Whitfield. 1877, p. 77. 

 Geol. of Wis., Whitfield, 1882, Vol. 4, p. 226. pi. 8, fig. 1, and 



pi. 10, figs. 9, 10. 

 Locality — P.eloit, Wis. 

 Types — Fig. 1. — Univ. of Wisconsin. Figs. 9. 10. — Univ. of 



California. 



Orthoceras carltonense Whitfield. Guelph (Sil.) 



Ann. Eept. Geol. Surv. Wis., Whitfield, 1S77, p. 8."). 

 Geol. of Wis., Whitfield, 1882, Vol. 4, p. 318. pi. 24, fig. 5. 

 Locality — Carlton, Wis. 

 Type — Univ. of Wisconsin. 



Orthoceras crebescens Hall. Niagara (Sil.) 



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



p. 354, pi. 19 (10.). figs. 1-3. 

 Locality — Eacine, Wis. 

 Type— Am. Mus. of Nat. Hist. 



Orthoceras gregarium Hall = Orthoceras socialis. 



