1911] Teller, Fossils from the Palaeozoic Formations. 233 



Metoptoma securva Whitfield. Lower .Magnesia n. 



Ann. Rept. Geol. Surv. Wis., Whitfield, 1877, p. 61. 



Geol. of Wis., Whitfield, 1SS2, Vol. 4, p. 196, pi. 3, figs. 14, 15. 



Locality — Bamboo, Wis. 



Types — Univ. of California. 



Metoptoma retrorsa Whitfield. Lower Magnesian. 



Ann. Kept. Geol. Surv. Wis., Whitfield, 1877, p. 54. 

 Geol. of Wis., Whitfield, 18S2, Vol. 4, p. 197, pi. 3, fig. 18. 

 Locality — Baraboo, Wis. 

 Type — Univ. of California. 



Metoptoma similes Whitfield. Lower Magnesian. 



Ann. Rept. Geol. Surv. Wis., Whitfield, 1877, p. 61. 



Geol. of Wis., Whitfield, 1882, Vol. 4. p. 196, pi. 3, figs. 12, 13. 



Locality — Baraboo, Wis. 



Types — Univ. of California. 



Murchisonia chamberlini Whitfield. Guelph (Sil.) 



Ann. Rept. Geol. Surv. Wis., Whitfield, 1877, p. 84. 

 Geol. of Wis., Whitfield, 1S82, Vol. 4, p. 317, pi. 24, fig. 4. 

 Locality — Carlton, Wis. 

 Type — Univ. of Wisconsin. 



Murchisonia conradi Hall. Niagara (Sil.) 



Eighteenth Ann. Rept, X. Y. State Cab. Nat. Hist., Hall, 1S64, 



p. 344, pi. LI (6.), fig. 19. 

 Trans. Wis. Acad. Sci. Arts and Letters, Teller, 1910, Vol. 16, 



Pt. 2, p. 12SG, pi. 15, figs. 1-3. 

 Locality — Racine, Wis. 

 Type— Am. Mus. of Nat, Hist. 



Murchisonia iaphami Hall. Niagara (Sil.) 



Geol. Surv., Rept, of Prog.. Hall. 1801, p. 36. 



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



p. 366, pi. 15 (6.), fig. 20. 

 Geol. of Wis., Whitfield, 1S82, Vol. 4. p. 296, pi. IS. fig. 9. 

 Locality — Racine, Wis. 

 Type — Am. Mus. of Nat, Hist. 



