194 University of Kansas Geological Survey. 
shells”! From the material collected at this locality Mr. Meek de- 
seribed ten species of Lamellibranchs and two species of Gastropods. 
The descriptions were first published without figures in 1872,? and 
the revised descriptions of fourteen species with illustrations in 
1876 in Meek’s Invertebrate Cretaceous and Tertiary Fossils of the 
upper Missouri country.? The localities from which the fossils were 
collected were briefly described by Professor Mudge in his “Geology 
of Kansas.”? Later, two additional species of Lamellibranchs were 
discovered by Professor Mudge in Saline county that were described 
in 1880 by Dr. Charles A. White.® To the above sixteen species 
Professor Cragin has added nine,® and Mr. T. W. Stanton one,’ 
making a total of twenty six (26) known species of marine mollusca 
in the Mentor formation. 
Acknowledgments.—The writer cheerfully acknowledges the 
assistance of Mr. J. W. Beede of Washburn College in studying the 
geology of central and southern Kansas; also that of Mr. C. N. 
Gould of the Southwest Kansas College who conducted the writer 
to many of the typical exposures of the Comanche series in southern 
Kansas; and to Mr. K. R. Cumings of Union College who has ma- 
terially aided in the preparation of the maps, sections and text 
of this report. ° 
1 Trans. Kans. Acad. Sci., Vol. I, reprint 1896, p. 38. 
2 Hayden’s 2d Rept. Geol. Surv. Wyoming and Territories, pp. 297-313. 
3 Rept. U. S. Geol. Surv. Territories, Hayden, vol. IX. See Pl. 2. 
4 First. Bien. Rept. State Board Agri. Kans., 2d ed., 1878, p. 67. See 9th An. Rept. 
U. S. Geol. and Geograph. Surv. Territories, Hayden, 1877, p. 291, for the same 
account. 
5 Proce. U. S. Nat. Mus., Vol. II, pp. 295, 296. These last two species were also 
described in Hayden’s 12th An. Rept. 
6 American Geologist, vol. X VI, p. 164. 
7 Tapes belviderensis Crag. (?) given in this report. 
