66 ON THE GEOLOGY AND NATURAL HISTORY 
of that species given by King, while the cardinal area is also proportionably much narrower in our shell. Division 
No. 10. On Smoky Hill river and Cottonwood creek. 
Area carbonaria, Cox. Vol. iii, Geol. Report Ky. p. 567, pl. 8, fig. 5. Our fossil is smaller and less distinctly 
striate, but exactly the form of the above. Near Leavenworth landing, Coal measures. 
Leda subscitula, Meek and Hayden. Trans. Albany Inst. vol. iv, March 2, 1858. Division No. 10. Smoky 
Hill river and Cottonwood creek. 
Pleurophorus? subcuneata, Meek and Hayden. Trans. Albany Inst. vol. iv, March 2, 1858. Our specimens 
of this species being casts we are left in doubt in regard to its generic relations. We suspect it may be a Cardinia. 
Same locality and position as preceding. 
Axinus (Schizodus) ovatus, Meek and Hayden. Proceed. Acad. Nat. Sci. Phila. December, 1858. This is 
very much like the Permian forms, §. rotwndatus and S. truncatus, but we found it in a rock on Cottonwood creek 
which we regard as below the Permian. 
Axinus rotundatus, Brown. Trans. Manch. Geol. Soe. vol. i, p. 81, pl. 6, fig. 29. We have referred this little 
shell to the above species with some doubt, but we have seen no characters by which it can be distinguished. No. 
10. Near Smoky Hill river. 
Allorisma ? Leavenworthensis, Meek and Hayden. Proc. Acad. Nat. Sci. Phila. December, 1858, p. 263. 
Upper Coal measures, Leavenworth city. 
Allorisma subcuneata, Meek and Hayden. Proceed. Acad. Nat. Sci. Phila. December, 1858, p. 263. Locality 
and position same as last. 
Allorisma ? altirostrata, Meek and Hayden. Proceed. Acad. Nat. Sci. Phila. December, 1858, p. 263. Upper 
Coal measures, Grasshopper creek. 
Allorisma ? Cooperi, Meek and Hayden. Proceed. Acad. Nat. Sci. Phila. December, 1858, p. 264. (Panopea 
Cooperi, Meek and Hayden. Trans. Albany Inst. vol. iv, March 2, 1858.) Near Helena, in upper Coal measures. 
Leptodomus granosus, Shumard. Trans. Acad. Sci. St. Louis, vol. i, p. 207. Upper Coal measures, near 
summit of hills, back of Leavenworth city; also near Leavenworth landing. 
GASTEROPODA. 
Pleurotomaria humerosa, Meek and Hayden. Proceed. Acad. Nat. Sci. Phila. December, 1858. In upper 
Coal measures, at Grasshopper creek. 
Pleurotomaria subturbinata, Meek and Hayden. Proceed. Acad. Nat. Sci. Phila. December, 1858, p. 264. 
Locality and position same as last. In the Proceedings of the Academy above cited, the locality of this species is 
erroneously given as at Helena. 
Bellerophon 
and near Cottonwood creek ; also casts of a large species at Leavenworth landing and Grasshopper creek, in the 
upper Coal measures. 
Euomphalus ? The species here alluded to was found in Nos. 11 and.37 of the foregoing general section. 
Kither it or a very closely allied species also ranges far below this in the upper Coal measures. It is nearly related 
to, if not identical with a species Prof. Hall has described in the Iowa Report, under the name of E. rugosus. 
CEPHALAPODA. 
Nautilus eecentricus, Meck and Hayden. Trans. Albany Inst. yol. iv, March 2, 1858. Smoky Hill river, 
Division No. 10. 
? We found a small undetermined species of this genus in Division 10. On Smoky Hill river : 
