Eastern Kansas and Nebraska. 159 
ossiis at numerous localities in Kansas and Nebraska, as wel 
as from familiarity with collections from that and other localities 
in the immediate vicinity. For instance, he knows that Cho- 
netes mucronata Meek and Hayden, Productus Prattenianus Nor- 
wood, Spirigera subtilita Hall, Spirifer (Martinia) planoconverus 
Shumard, Spiri/er cameratus Morton, Myalina perattenuata, Pleu- 
rophorus occidentalis and Sedgwickia? concava M. & H.,* together 
with species of Aviculopecten, and one of those forms belonging to 
shell, from Kansas, sent to Mr. Salter of London for comparison, 
Within the past year, were also referred to S. Uri. 
fa, Productus Prattenianus, Productus costatus, P. Flemingu, 
Spirigera sublilita, Sptrifer planoconvexus 
cameraius are mmon and ¢ 
the oal-measures of Kansas and Nebraska, Northern Missouri 
ane d), and, especially in Kansas, Nebraska, 
and north western Missouri, with a form so nearly like Panopea 
In describ iter and Dr. H. thought the bed 
: . t ; , the writer and Dr. iS , bea. 
from which on retort bind D: te Pevitian: but on afterward uscertaining 
these shells are there and elsewhere associated with numerous well mar. 
Coal-measure rms, they were satisfied that it does not belong to the Permian. 
