34 riie American Geologist. January, i9(m) 
ing around with a hammer among the sandstone." The locahty 
as ]\lr. Hall indicated it is three and one-fourth miles south and 
one-fourth mile west of Bavaria on the southeast quarter of 
section i6, T. 15, R. 4. W. In a bend along the side of a dry 
stream is a ledge of gray, -rather massive sandstone about 
fifteen feet thick with bands and pockets of clay and ironstone 
concretions. Xo fossils were found in place but a number 
were obtained from loose boulders scattered on the surface. 
c. Fossils. 
Besides the invertebrates listed by professor Cragin, con- 
sisting of twenty-five species, the following fossils have been 
fomid in the region. The list was courteously furnished me by 
professor Jones who states that Dr. Stanton identified the 
specimens. 
Ostrea quadruplicata Shum. 
Roudaria (?) quadrans Crag. 
Protocardia salinaensis Mk. 
Tapes belviderensis Crag. 
Inesalia kansasensis Mk. 
Turritella belviderensis Crag. 
And the following genera, probably representing new 
species : 
Linearia, Homonya, Cymella, Corbula, Glauconia. 
Pyrgulifera and Sphenodiscus. 
II. The Marquette Locality. 
a. History and Description. 
The Mentor beds proper, of which the typical locality is 
four miles east of Mentor, probably extend without interrup- 
tion past and around the Smoky Hill buttes to a point near 
the town of Alarquette, twenty miles southwest. It. is four and 
five miles southwest of Marquette on the south side of the 
Smoky Hill river that the Marquette locality is situated. Di- 
rectly south of Marquette the country slopes gently for ten 
miles or more to the McPherson ridge described by Mr. J. W. 
Beede in his paper on the McPherson Equus Beds.* A few 
miles west of this point the streams rising in the level plains 
of the south have cut their way through the rocks nearly to the 
*Uni. Geol. Sur. of Kans., vol. II, pp. 287-296, 1897. 
