PLAICE XXV. 



Page. 



Fiiis. 1 and 2. Pkodromites ciORBYi Miller 37 



Lower Carboniferous, Kinderliook, Burlington, Iowa. No. 6222, paleontologie collection, 

 Walker Museum, University of t'hica.no. 



Fios. 3 and 4. Prodro.mites PR.EM.M'rRis Smith and Weller 40 



From the Lower C'arboniferous, Kinderliook, of Roi'kford, Ind. No. 6223, paleontolofjic 

 collection, Walker IMuseum, University of Chicago. 



Fii:. 5. Septa of Hedenstrce.mi.^ mmsisovicsi Diener 34 



For comparison with the septa of Prodromites. 



Figs. 6-8. Prodromites orn.^ti's Smith, sp. nov 39 



Lower Carboniferous, Kinderhook stage, Chouteau limestone, Pettis County, JIo. 

 Figs. 6-7. Side and front views, natural sizes. 

 Fig. 8. Septa, enlarged 3 times. 



(Note. — Figs. 1-5, PI. VIII, Jour. Geol., Vol. IX, No. 3, were loaned by the University of 

 Chicago; fig. 5 is from Pal. Indica, Ser. XV, Cephalopoda of the Lower Trias, PI. XX, iig. le. ) 



198 



