The Fauna of the Maxville Limestone. 405 



1895. Bellerophon suhlccvis ? Whitfield, Geol. Surv. Ohio, Vol. VII, p. 

 479, pi. 10, figs. 20, 21. 

 Maxville limestone : Newtonville and Maxville, Ohio. 

 1897. Bellerophon sublcevis. Weller, Trans. N. Y. Acad. Sci., Vol. XVI,. 

 p. 269, pi. 21, fig. 10. 

 Batesville sandstone : Batesville, Arkansas. 

 1906. Bellerophon sublcevis. Cumings, Ind. Dept. Geol. Nat. Res., 30th 

 Ann. Rep., p. 1360, pi. 25, figs. 6, 7. 

 Salem limestone: Spergen Hill, Bloomington, Indiana; Alton,, 

 Illinois. 

 1909. Bellerophon sublcevis. Grabau and Shimer, N. A. Index Foss., p. 

 620, fig. 832. 

 St. Louis and Chester group : Indiana, Illinois, Ohio, Missouri,. 



Arkansas. 

 Lower Coal Measures : Pennsylvania. 



Description. — • Shell subglobose with three whorls of which 

 the last or bod}- whorl is moderately expanded. The inner 

 whorl projects into and strongly modifies the aperture which is 

 transversely kidney-shaped. Outer lip both thick and somewhat 

 reflected at the junction with the body of the shell. Umbilicus 

 not developed. Anterior portion of body whorl keeled in the 

 best preserved specimens. 



Fig. 29. — Bellerophon snblcevis. 



a and b. — ^Back and profile views of the same specimen from which 

 the shell is mostly removed. (After Whitfield.) 



Surface of nearly all of the Maxville specimens not pre- 

 served. However, one or two show the surface to be crossed by 

 fine transverse strise, which bend abmptly backward over the 

 keel as described by Hall (1858). 



Greatest diameter 15-26 mm. 



The shell is characterized by its subglobose outline and 



