BEEDE AND ROGERS.| Coal Measures Faunal Studies. B41 
Chenomya leavenworthensis M. and H., Lima retifera Shum. 
and Stenopora biserialis (Swall.). Thirteen species are found 
in large numbers for the first time in this stage. They are, with 
their horizons, as follows: Bethany Falls limestone—Dielasma 
bovidens Mort., Chonetes verneuilanus N. and P.; Mound Val-. 
ley limestone—Myalina subquadrata Shum., Spiriferina ken- 
tuckiensis (Shum.), Polypora elliptica Rog., Stenopora car- 
bonaria (Worth.) ; Galesburg shales—Cypridella sp.; Dennis: 
limestone—Aviculopecten carboniferus Stev., A. occidentalis 
(Shum.), Bellerophon crassus M. and W., Productus costatus 
Sow., Proboscidella sp., Rhombopora sp. The four species 
which reach numerical importance only in Stage C are Cysto- 
dictya inequimarginata Rog., Rhombocladia delicata Rog., 
Schizodus wheelert Swall., and Bellerophon percarinatus Conr. 
Lophophyllum westui Beede culminates in the Bethany Falls 
limestone and Proboscidella sp. in the Dennis. Euphemus no- 
docarinatus (Hall), Asymtoceras capax (M. and W.) and Colo- 
ceras globatum (M. and W.) ? have been found only in rocks of 
this stage, and the following species have not been found in the 
succeeding strata; H’phippoceras divisum (W. and St. J.), 
Pleurotomaria broadheadi White, Nautilus planorbiformis M. 
and W. and Pugnax rockymontana (Marc.) 
Stage D.—This is the most strongly marked of any stage in 
the Kansas Coal Measures. It was characterized by the in- 
vasion of an oolitic fauna so different in its general make- 
up that it forms a distinct and important chapter in the 
Coal Measures history of the state. Here we have the 
first strong Pseudomonotis fauna introduced in abundance 
among species supposedly incongruous with it. The fauna, 
like that of other oolitic faunas of this country, is strongly 
molluscan. The relation of the number of species of the 
Mollusca to the Molluscoidea is practically three to one. 
Many of the species introduced disappeared at the close of the 
stage, never to return. Some of the stronger ones reappear in 
the Kickapoo limestone and the Pseudomonoti form strong 
features of the Permian fauna. 
One of the striking features of this fauna is, according to 
Doctor Bennett’s list, the recurrence here of a Mississippian 
oolitic fauna in part. Contrasting with this we have nearly all 
of the known Paleozoic species of Pseudomonotis found in 
America occurring here in fair abundance. Over 400 sneci- 
mens of them from this limestone have been studied by one of 
