116 CARBONIFEROUS AMMONOIDS OF AMERICA. 



whorls. Septa with sliort funnel-shaped ventral lobe, and longer, broader, 

 and rounded lateral lol)e. Ventral saddles parabolic, lateral saddles 

 rounded. 



Occurrence. — Lower CJarboniferous, Kinderhook stage, Marshall group, 



Point aux Barques, Mich. 



Aganides romingeri Winchell. 

 1862. Goniatit'-s rninltHi.-r!, A. Winchell, Proc. Acad. Nat. Sci. Phila.. 1862, p. -427. 



Shell subglobose, whorl highly arched with regularly rounded venter 

 and gently convex sides, and but slight umbilical depression. Umbilicus 

 closed. Breadth of whorl equal to one-half of the total diameter of the 



shell. 



Ventral lobe long, linguiform; clarate acute; lateral lobe long as 

 ventral, narrow and sublinguiform. Ventral saddle obtuse, linguiform, 

 unsymmetric; lateral saddle deep, broad, extending nearly as far forward as 



the ventral. 



This species resembles Aganides rotatorius de Koninck, but has nar- 

 rower lateral lobe and is more robust on subglobose; the breadth of the 

 whorl is one-half of the diameter, instead of only one-third, as in A, 

 rotatorius. 



Occurrence. — Lower Carboniferous, Kinderhook stage, Marshall, Mich. 



Aganides sciotoexsis Miller and Faber. 



PI. VIII, figs. 2 and 3. 



1892. Goniatites sciotoensis, Miller and Faber, Jour. Cincinnati Soc. Nat. Hist., Vol. 

 XIV. p. 165. PI. VI, figs. 2, 3. 

 The following description is quoted from the paper b}^ Miller and Faber: 



Stiell medium, or rather above medium sizi-; somewhat lenticular in form, 

 obtusely rounded on the dorsum [abdomen]. Umbilicus consisting of a shallow, 

 funnel-shaped fossette, without exposing any of the volutions. Volutions few, 

 rapidly enlarging, the outer ones profoundly grooved for the reception of the inner 

 ones, and depressed convex on the sides. The greatest transverse diameter is at the 

 margin of the umbilical fossette, and it is about two-thirds the dorso-ventral diameter. 

 Seven furrows radiate from the margin of the umbilicus on each side, curve gently 

 forward at the superior lateral sides and then curve more a))ruptly backward across 

 the dorsum [abdomen], as is shown in one specimen. Probably, if the specimen was 



