404 Proceedings of the Ohio State Academy of Science. 



the body-volution by a double series of rounded nodes, those on 

 one side of the center alternating with those of the other side, 

 and the inner margins of the two series interlocking with each 

 other. Aperture broadly elliptical, strongly modified by the 

 projection of the preceding volution, on the inner margin. 

 Auriculations largely developed and slightly reflected. Axis 

 very distinctly perforate. Inner lip somewhat callous on the 

 protruding inner volution. Surface of the shell, so far as can 

 be ascertained, marked only by lines of growth, beyond the 

 nodes mentioned [Whitfield, 1895]." 



Horizon and locality. — ■ Maxville limestone. 

 Unknown zone: White Cottage (Type specimen). 



BELLEROPHON SUBLAEVIS— Hall. 



1856. Bellerophon suhlavis. Hall, Trans. Albany Inst., Vol. IV, p. 32. 

 St. Louis limestone: Spergen Hill and Bloomington, Indiana; 

 Alton, Illinois. 

 1858. Bellerophon suhlccvis. Hall, Geol. Surv. Iowa, Vol. 1, pt. II, p. 

 666, pi. 23, figs. 15a-c. 

 Warsaw limestone : Above Alton, Illinois ; Spergen Hill and 

 Bloomington, Indiana. 

 1882. Bellerophon siiblcevis. White, Ind. Geol. Nat. Hist., 11th Ann. 

 Rep., p. 359, pi. 40, figs. 5-7. 

 St. Louis group : Elletsville, Indiana. 



1882. Bellerophon sublcevis. Whitfield, Bull. Am. Mus. Nat. Hist., Vol. 



I, p. 89, pi. 8, figs. 6, 7. 

 St. Louis group : Spergen Hill, Bloomington, Paynter's Hill and 

 Elletsville, Indiana ; Alton, Illinois. 



1883. Bellerophon sublcevis. Hall, Ind. Geol. Nat. Hist., 12th Rep., p. 



371, pi. 3, figs. 6-7. 

 St. Louis group: Alton, Illinois; Spergen Hill, Lanesville and 

 Bloomington, Indiana. 

 1886. Bellerophon sublcevis. Claypole, Proc. and Coll. Wyo. Hist, and 

 Geol. Soc., Vol. II, pt. li, p. 246. 

 Lower Coal Measures : Wilkesbarre, Pennsylvania. 

 1891. Bellerophon sublcevis ? Whitfield, Ann. N. Y. Acad. Sci., Vol. V, 

 p. 592, pi. 14, figs. 20, 21. 

 Maxville limestone : Newtonville and Maxville, Ohio. 

 1894. Bellerophon sublcevis. Keyes, Mo. Geol. Surv., Vol. V, p. 148. 

 St. Louis limestone : St. Louis, Missouri. 



