PKODliUMlTES. ■ 39 



2. Specimen obtained tVdiu Prof. G. C. Broadhead, Chouteau limestone, 

 Pettis County, I\[i)., probul)ly t'nim the same locaht}' as tlie last. No. 6474, 

 paleontologic collection, Wnlker ^[useuni, University of Chicago (PI. 

 XXIII, tig. 2). 



l>intnisioux. 



Millimeters. 



Diameter 117 



Height of last whorl HS 



Height of last \vhi)rl from the preceding 38 



Involution 30 



Width of und)ilicus o? 



3. Specimen from tlie Kinderhook limestone of Burlington, Iowa, 

 between the oolitic limestone and tlie butf magnesian bed that lies imme- 

 diately below the Burlington Ijeds of the Osage stage. No. 6222, jial- 

 eoutologic collection. Walker Museum, University of Chicago {F\. XXV, 

 figs. 1 and 2) 



Dimensions. 



Millimeters. 



Diameter 7.5 



Height of last whorl 42 



Height of la.st whorl from the jiret'eding 25 



Width of last whorl 10 



Involution .- 17 



Width of nmliilicus, aljout 4 



4. Specimen from the goniatite beds of the Kinderhook of Rockford, 

 Ind.; in the paleontologic collection of Fred. Braun, of Brooklyn, N. Y., 

 where it was examined by the writer. Its dimensions are about the same 

 as of the two specimens from Missouri. 



5. A specimen from this species is said to be in the U. S. National 

 Museum, but it has not been seen by the writer. 



Prodromites ornatus Smith, sp. nov. 

 Phite XXV, figs. 6-8. 



Form discoidal, involute, laterally compressed. Whorls deeply 

 embracing, and deeply indented by the inner volutions. Cross section of 

 the whorl high and narrow, with flattened sides and acute venter, sur- 

 mounted by a sharp, narrow keel. The umbilicus is almost entirely closed, 

 and without umbilical shoulders Tiie height of the whorl is somewhat 

 more than one-half of the total diameter ot tlie shell, and the Vireadth is 

 one-fourth of the heioht: it is indented bv the inner volution to one-half of 



