Rt 
is 
a« 
‘i 
ee 
LP ee PE a ee ee 
Aucella Hausmanni Goldf. In the last number of this Jour- 
these rocks. On the other hand, the casts figured by Prof. Gei- 
nitz (from the Permian of Kansas and not from Nebraska) under 
he name Myalina peraitenuata, and which I had supposed to be- 
long to that species, must be the JL. permiana of Swallow, though 
they have more attenuate beaks than is common in that species. 
The two forms, however, are very similar, and in some of their 
varieties can not be readily distinguished, as has been ascertained. 
m comparison of specimens recently obtained by Dr. Hayden. 
The typical I. permiana does not occur, so far as known, on the 
Missouri. 
Nebraska City, include all the varieties assumed by this shell at 
red. und in 
Measures associated with Fusulina cylindrica and Productus Ne- 
8. 
4ons B and © at Nebraska City, as 
AM. Jour. Sc1.—Szconp Senres, Vou, XLIV, No. 132.—Nov., 1867. 
Review of Geinitz on the rocks and fossils of Nebraska. 329 
: : * ris Schlot (sp. ecimens from the divis- : 
Stenopora columnaris Sc : p-) well as from various lower 
