_Griffithides_ sp. From about the same horizon on the South Fork of the Black Vermillion: _Fusulina secalica_ (Say). _Lophophyllum profundum_ (Milne-Edwards and Haime) Foerste. _Dichotrypa subramosa_ Rogers, MSS. _Fenestella limbata_ Foerste. _Fistulipora nodulifera_ Meek. _Septopora_ sp. _Thamniscus octonarius_ Ulrich. _Crinoid_ stems. _Archæocidaris_ sp. _Archæocidaris_ sp. _Ambocœlia planoconvexa_ (Shumard) Hall and Clarke. _Chonetes granulifer_ Owen. _Derbya crassa_ (Meek and Hayden) Waagen. _Hustedia mormoni_ (Marcou) Hall and Clarke. _Meekella striaticostata_ (Cox) White and St. John. _Productus cora_ d’Orbigny. _Productus longispinus_ Sowerby. _Productus nebraskensis_ Owen. _Productus semireticulatus_ (Martin) d’Orbigny. _Pugnax utah_ (Marcou) Hall and Clarke. _Rhipidomella pecosi_ (Marcou) Hall and Clarke. _Spirifer cameratus_ Morton. _Allorisma subcuneata_ Meek and Hayden. _Aviculopecten occidentalis_ (Shumard) Meek and Hayden. _Chænomya_ sp. _Pleurophorus whitei_ Beede. _? Sedgwickia altirostrata_ Meek and Hayden. _Euomphalus subrugosus_ (Meek and Worthen) Meek. _Griffithides scitula_ (Meek and Hayden) Vogdes. =39.= NEVA LIMESTONE. Prosser and Beede, MSS. This is the “dry bone” limestone of Swallow.[15] It is a gray limestone six or eight feet in thickness, in two layers, separated by a layer of shale. It weathers very rough, from which fact Swallow called it the “dry bone” limestone. =40.= ESKRIDGE SHALES. Prosser, MSS. About thirty feet of shales between the above and the base of the Cottonwood limestone. =41.= COTTONWOOD LIMESTONE. Six feet of light buff-gray limestone, in two layers, the upper usually somewhat cherty, and filled with a small form of _Fusulina secalica_ (Say). An excellent dimension stone, of wide distribution. Fossils rare. _Fusulina secalica_ (Say). _Lophophyllum profundum_ (Milne-Edwards and Haime) Foerste. _Archæocidaris_ sp. _Cystodictia inequimarginata_ Rogers. _Fenestella limbata_ Foerste. _Fenestella remota_ Foerste. _Fistulipora nodulifera_ Meek. _Pinnatopora_ sp. _Rhabdomeson americanus_ Rogers. _Rhombopora lepidodendroides_ Meek. _Septopora biserialis_ (Swallow) Foerste. _Streblotrypa prisca_ Gabb and Horn. _Chonetes granulifer_ Owen. _Pinna_ sp. _Griffithides scitula_ (Meek and Hayden) Vogdes. GEOLOGICAL LABORATORY, INDIANA UNIVERSITY, JUNE 14, 1902. ----- Footnote 1: In justice to Mr. Rogers, it should be stated that he did not see the proof of the first article and is not to blame for the very bad errors which it contains. Footnote 2: Univ. Geol. Surv. Kans., III, pp. 93, 94, 1898. Footnote 3: Univ. Geol. Surv. Kans., I, p. 116, 1896. Footnote 4: “Deer Creek Limestone,” Univ. Geol. Surv. Kans., II, p. 117. Footnote 5: Kans. Univ. Quart., III, p. 278, 1895. Footnote 6: Univ. Geol. Surv. Kans., I, pp. 118, 119, 1896. Footnote 7: Ibid., p. 394. Footnote 8: Ibid., pp. 66, 67. Footnote 9: