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



Calymene mamillata Hall. Trenton (Orel.) 

 Geol. of Wis., Hall, 1861, p. 50. 

 Geol. of Wis., Hall, 1862. Vol. 1, p. 432, figs. 1, 2. 



Obs. The type ( specimens are marked as from Iowa but 

 are known to have been collected near Dodgeville, Wis. 

 Locality — Dodgeville, Wis. 

 Types— Am. Mus. of Nat. Hist. 



Ceratiocaris monroei Whitfield. Lower Helderberg. 



Bull. Am. Mus. of Nat. Hist,. Whitfield, 1896, Vol. S, p. 301. pi. 13. 

 figs. 1-5. 



Locality — Waubeka. Wis. 

 Types — Am. .Mus. of Nat. Hist, 



Ceratiocaris poduriformis Whitfield. Lower Helderberg. 



Bull. Am. Mus. of Nat. Hist.. Whitfield. 1896, Vol. S. p. 302. pi. 14. 

 fig. 10. 



Locality — Waubeka, Wis. 

 Types — Am. Mus. of Nat. Hist. 



Ceraurus insignis Hall = Ceraurus niagarensis. 



Ceraurus niagarensis Hall. Niagara (Sil.) 



Ceraurus insignis, Eighteenth Ann. Rept. N. Y. State Cab. of 



Nat. Hist.. Hall, 1864. p. 335. 

 Ceraurus niagarensis, Twentieth Ann. Rept. X. V. State Cab. of 



Nat. Hist., Hall, 1867, p. 376, pi. 21 (12.). figs. 10-11. 



Locality — Milwaukee, Wis. 

 Types — Am. Mus. of Nat, Hist. 



Ceraurus rarus Walcott. Trenton (Ord.) 



Advanced Sheets. Thirty-first Kept. N. Y. State Mus. of Nat, 



Hist., Walcott, 1873, p. 15. 

 Thirty-first Ann. Rept. N. Y. State Mus. of Nat, Hist.. Walcott, 



1879, p. 65. 



Locality — Beloit, Wis. 



Types — Mus. of Comp. Zoology. Cambridge. Mass. 



