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



Hlaenus taurus Hall. Trenton (Ord.) 



Geol. of Wis., Kept, of Prog., Hall, 1861, p. 49. 



Mem. Am. Mus. of Nat. Hist., Whitfield, 1895, Vol. 1, Pt. 2, p. 73, 



pi. 12, figs. 4-9. 

 Locality — Mineral Point, Wis. 

 Types — Am. Mus. of Nat. Hist. 



Leperditia fabulites (Conrad.) Trenton (Ord.) 



Cytherina fabulites, Proc. Acad. Nat. Sci., Phila., Conrad, 1843. 

 Leperditia fabulites, Am. Pal. Fossils,. Miller, 1S77. p. 219. 

 Locality — Mineral Point, Wis. 

 Types— Am. Mus. of Nat. Hist. ? 



Leperditia germana Ulrich = Leperditella germana. 



Leperditia fonticola Hall. Niagara (Sil.) 



Eighteenth Ann. Eept. N. Y. State Cab. of Xat. Hist., Hall. 1864, 



p. 335, pi. 21 (12.). figs. 1-3. 

 Locality — Fond du Lac, Wis. 

 Types—? 



Leperditella germana Ulrich. Trenton (Ord.) 



Leperditia genitalia, American Geologist. Ulrich, 1892. Vol. 10, 



p. 266. 

 Leperditella garmana, Geol. and Nat. Hist. Surv., Minn. Ulrich, 



1897. Vol. 3, P. 2, p. 638, pi. 45, figs. 24-26. 

 Locality — Mineral Point, Wis. 



Types — U. S. National Museum. 



Lonchocephalus chippewaensis Owen = Ptychoparia chippeivwnsis. 

 Lonchocephalus hamulus Owen = Anomoearc hamulus. 



Microdiscus ? bullatus (Hall.) Upper Cambrian. 



Pemphigaspis bullata, Sixteenth Ann. Eept. N. Y. State Cab. of 



Nat. Hist., Hall, 1863, p. 221, pi. 15a, figs. 3-5. 

 Microdiscus f bullatus, Bull. Am. Mus. of Nat. Hist., Whitfield, 



1898, Vol. 2, Pt. 1, p. 10. 

 Locality — Trempealeau, Wis. 

 Types — Am. Mus. of Nat. Hist. 



