PLATE XXIII. 



Page. 

 Pi;oi)KOMiTEs cdRiiYi Miller _ 37 



FifT. 1. ^liller's type specimen No. HL'OS, Walker Miisenni, from the Lower Carljoniferous, 

 Kinderhook stage, Chouteau limestone, Pin Hook Bridge, Pettis County, 'Slo. 



Fijr. 2. Specimen Xo. ()474, paleontoloijic eollection,' Walker Museum, University of 

 Chieago, from the Lower Carboniferous, Kinderhook stage, Chouteau limestone. Pettis 

 County, Mo. 



Note. — Fig. 1 was PL VI, Jour. Geol., VoL IX; sin-cimen loaned by the University of Chieago. 

 Fig. 2 is after PI. VII, Jour. Geol., Vol. IX. 



19i 



