ACiANIDES. 115 



Occiirmicc. — In tlic Lower ("iirhouit'erous, Kindcrliook stage, Chouteau 

 limestone, of Pettis County, Mo. The ty])e is deposited in tlie paleon- 

 tolog'ie collection of the Walker Museum, University of Chicago, No. 8601. 

 The writer's thanks are due to Dr. Stiiart Weller for the use of the specimen, 

 which is the only one known. 



Aganides JESSIE.^ Miller ;in<l Oiu'ley. 

 IM. XVH, tigs. 18-'20. 



1896. Goiiiatites jessleee. Miller uiid Gurley. Bull. Illinois Stuto Mas. Nat. Hist. No. 

 11, p. 4r.. n. V. Hos. 18-20. 



Shell discoidal, laterally comjiressed, involute. Whorls liigh, indented 

 to one-half of the height by tlie preceding whorl; alxlomen narrowly 

 rounded, sides flattened. Volutions rapidly expanding, concealing all the 

 inner whorls. Umbilical shoulders abruptly rounding; umbilicus closed. 

 Breadth of whorl is equal to three-fourths of the height and nearlj- one-half 

 of the total diameter 



Septa composed of a long, tongue-shaped, undivided, ventral lobe and 

 a shoi'ter and more rounded lateral. First lateral saddle long and narrowly 

 rounded; second lateral short and broadly rounded. Internal septa 

 unknown. 



Surface smooth, so far as known. 



This species is closely related to Aganides rofatorius, but has somewhat 

 simpler septa, with longer ventral lobe, and rounded instead of angular 

 laterals. The form is also slightly more robust than that of Affanides 

 rotator ius. 



Dr. J. M. Clarke" cites Aganides jessieee as a member of the genus 

 Tornoceras, but its characters agree better with Aganides. 



Occurrence. — Lower Carboniferous, Kinderhook stage, Sedalia, Mo. 



iffirniis TCindMi'linnW st:^_ ^ 



Aganides propinquus Winchell. 



1862. Gotiiatites pi'djihiquiis, A. Wiiu'hi^ll, Am. Jour. Sci., i)d scries, Vol. XXXIIl, 



p. 365. 

 1870. Gdniatitc-'i jirapliKjidi-s, A. A\'inehell, I'roc. Am. Pliilos. Soc, Vol. XI, p. 2.59. 



Shell robust, whorl highly arched, with broadly rounded abdomen and 

 moderately convex sides. Umbilicus closed, not showing the interior 



"Naples Fauna (Fauna witli .Manlicoceras intumescenn) of New York, p. 110. 



