THE MARSHALLTOWN. 85 



Locality 179. A few fossils have been collected from the 

 Marshalltown clay-marl just below the road at the foot of an old 

 mill pond a little less than 1.5 miles northwest of Harrisonville 

 station. The species which have been identified are as follows : 



PELECYPODA. 



Cucullaea tip p ana Con. 

 Gryphaea mutabilis Mort. 

 Pecten argillensis Con. 

 Pec ten vcnustus Mort. 

 Neithea quinquecostata (Sow.). 

 Plagiostoma erecta (Whitf.). 

 Paranomia scabra (Mort.) 



GASTROPODA. 



Rostellites sp. 



Locality 190. In 1895 Mr. G. N. Knapp collected a small 

 series of fossils in the Marshalltown clay-marl from Lloyd's marl 

 pits at Marshalltown, and the following species have been iden- 

 tified : 



PELECYPODA. 



Cucullaea tippana Con. 



Cr as satellites subplanus (Con.). 



Cardium tenuistriatum (Whitf.). 



t 



GASTROPODA. 



Turritella sp. 



