LlTDI. 



356 



Lituites ? ortoni, Meek. See Appendix. 



Jjoonlipora ( Fenestella) ambigua, Hall { Hemitrypa dubia^ 



i\ 



za 



t^K^IS 



Ind.1881. 



Hall, 28th Rt., 1876 ; Fenestella ambigua, Hall, 28th Rt., 1879). 

 CoUett's Indiana Report of 1881, page 248, plate 10, figs.p? to 

 21. In well-preserved specimens there are rows of minute 

 pits between the striae. — Niagara, Vb. 



lionchocephalus chippewaensis (Conccephalus chippe- 



waensis, Owen, 1852, pi. l,figs. 6, 14, pi. 1 A, fig. 9, from the 

 Fourth Trilobite bed on the Menomenie river.—/. 



Lonchocephalus hamulus. ( Conocephalus hamulus^ 



OvV. -C. h. 



Owen, 1852, plate lA, figs. 8, 12, a curious hook-shaped spine 



