The Jlantor Beds. — Cray in. 16i.5 
examples of the typical form so common in the Denison beds? 
and in the Kiowa shales. The Cardiuhi kansa.sense is a com- 
mon fossil of the Kiowa shales but has not been reported from 
the Denison beds. Ontrea fiudikJini occurs in profusio^i in the 
Kiowa shales and less abundantly in the Denison beds ; while 
the (>. qiiddriiplivatd, abundant in the Denison beds, occurs 
only in th(- upper part of the Kiowa shales, and that rather 
sparingly. Trhjonla <-l(ivi<jei-(i is common in the Marietta 
beds of the Denison and in the Kiow^T. In his recent ar- 
ticle on " The Choctaw and Grayson terranes of the Ari- 
etina" (published April 5, 1895, in Colorado College Stud- 
ies, vol. 5*) the writer has noted the occurrence of the 
YoUliu microdontd in the Pawpaw clays of the Denison beds. 
It is probable that MtinjarifdiKi ?yM'(///ero^c/, Meek, should be 
added to the list of species common to the Mentor beds and 
the Kiowa shales, as the writer's 31. marcoiiana is closely re- 
lated to it and is likel}^ to prove to be synonymous. The re- 
volving carina? on the shell are represented as plain in the 
former and are apparently crenulated or granulated in the 
latter species ; but this supposed difference may be due to a 
difference in the state of preservation of the specimens exam- 
ined. 
The Mentor beds are thus seen to be characterized by a 
fauna related to that of the Denison beds and still more closely 
to that of the Kiowa shales. Their fauna is, in fact, especially 
related to that of the upper part of the latter. 
The stratigraphic relation to the Kiowa shales is also close. 
While the Mentor beds generally rest upon the Permian in Sa- 
line county, they rest in part upon the Kiowa shales further 
southward, as shown by the occurrence beneath them of black 
shales amongst some of whose fossils, submitted to the writer 
from a few miles west of Lindsborg by Prof. J. 'A. Udden, are 
Modiola stoneti'aUen.'iis^ nob., and Si>henodis<:us pedernalls, 
Roem. ; but w^hether they are to be considered as overlying all 
of the Kiowa or only a lower part of it, and whether or not 
they merge southward into the upper part of the Kiowa, are 
questions that remain still unanswered. 
*A8 the date of the papers puVilished in this volume hap been called 
in question, the writer wishes here to state that, owingr to circum- 
stances l)eyond his control, this "Fifth Annual Publication" was erro- 
neously dated "1894. '" Beinj^ a delayed volunie, due to ai)pear in 1894, 
it should have been inscriVjed, "For 1894," and the date of publication,, 
1895, should have been repeated at the foot of the title page. 
