Naut. 



446 



PI 35; 



p. 166, plate 35, figs. 1, 2^ natural size^ incomplete cast; closely 

 related to Nautilus spectahilis of Meek & Worthen, Illinois 

 Et. Vol. 2, plate 25, from the Chester limestone {XI), the only- 

 reason for supposing it a different species. Coal Measures^, 

 Fountain Co., Ind.— X/ZZ. 



Nautilus occidentalis, Swallow, Trans. St. Louis Acad. 

 Sci. 1858, in so Gdlledi Permian^ov Permo-Carhoniferous strata^ 

 XVIL In the Pennsylvania coal measures (KKK. p. 310) 

 it occurs much earlier: first, in ihe Lower Productive {Alle- 

 gheny river series) in Beaver, Lawrence, Mercer and Butler 

 Cos. (Q, 62, 200; Q2, p. 47 ; Q4, p. 25 ; V, p. 147) ; then, in the 

 Pine creek and Brush creek limestones, at Smith's ferry, etc. 

 (Q. 33, 34,264) ; then, in the Crinoidal limestone of the Barren 

 {Pittsburgh) series, 250' under the Pittsburgh coal bed (L, 36; 

 K, m),—XIIL XIV.— See Appendix. 



Nautilus spectabilis, near X, missouriensis. XIII. 



Nautilus winslovi. { Temnocheilus winslovi, Meek & 

 Worthen Illinois Rt. 5, 1873, plate 32). Collett's Indiana Rt. 

 1882, page 165, plate 36, figs. 1, 2, reduced to about 5 6 of the 

 type specimen, from Danville, 111. About M, or N, of the Indi- 

 ana coal beds. XIII. {For figure, see p. iJf7.) 



