BEEDE AND ROGERS.] Coal Measures Faunal Studies. 347 
Stearoceras gibbosum Hyatt and Placunopsis carbonaria 
Meek. 
Stage H.—Stage H as here understood differs from the 
Wabaunsee formation in including, as its author did originally, 
the Seranton shales as its basal member. The Elmdale for- 
mation, Neva limestone and Eskridge shales are removed from 
the top and put in another stage. These studies have brought 
to light the reasons, discussed later, for making this change. It 
comprises the Scranton shale, Burlingame limestone, Willard 
shale, Emporia limestone, Admire shale and Americus lime- 
stone. Sedgwickia altirostrata M. and H. is first added in the 
Burlingame limestone. Productus punctatus Mart., Myalina 
subquadrata Shum., Bellerophon percarinatus Conr., Buca- 
nopsis marcowianus (Gein.), Myalina ampla Meek, Pseudo- 
monotis robusta Beede and Hdmondia aspenwallensis Meek 
are last recorded from this horizon. E’dmondia aspenwallensis 
Meek and Allorisma terminale Hall culminate here, so far as 
the strata covered in this paper are concerned. The latter 
is especially abundant in the Wreford limestone at Blue 
Springs, Neb. Seven species are peculiar to this horizon. In 
the Emporia limestone two cephalopods, Gastrioceras sp. and 
Aganides sp., form important elements in the fauna and are 
now known from no other horizon. Lophophyllum westu 
Beede is doubtfully recognized here for the last time. Pleuro- 
tomaria perhumerosa Meek is locally abundant in the region 
of the type locality of the Emporia limestone, and has been 
seen in no higher horizon. The latter statement is true of 
Strophostylus nanus (M. and W.) and Naticopsis altonensis 
McChes. 
Two important genera are added in the Americus limestone, 
Bairdia and Beyrichiella, each represented by a single species, 
while Hustedia mormoni (Marc.) is very abundant. Chonetes 
verneuilanus N. and P. and Allorisma Geinitzi Meek are re- 
corded here by Doctor Girty. It is their last occurrence in 
the Kansas section. Meekopora prosseri Ulr. becomes abun-. 
dant in this limestone. 
SERIES IV. 
Series IV is characterized by the introduction of typical 
Permian species, such as Pleurophorus whitei Beede, Myalina 
aviculoides Meek? and Aviculopinna nebraskensis Beede, in 
the Elmdale (?). It is also significant in this connection 
that Doctor Girty finds Bakewellia parva M. and H. in the 
