42 Cincinnati Society of Natural History 



NOTES ON RICHMOND AND RELATED FOSSILS 



Aug. F. Foerste 



The following notes are based upon a number of specimens 

 collected by John Misener from the upper half of the Rich- 

 mond group, at Richmond, Indiana. To this is added a dis- 

 cussion of Dinorthis retrorsa, Salter, a very rare species from 

 the Bala group of Wales, with which it is customary to identify 

 Dinorthis carleyi. Hall, from the Richmond of Ohio, Indiana, 

 Kentucky and Tennessee. Figures are presented also of the 

 type of Zitteloceras hallianum, D'Orbigny, from the Trenton 

 of New York, with which Cyrtoceras hitzi, Foerste, from the 

 Hitz layer, at the top of the Richmond group at Madison, 

 Indiana, evidently is congeneric. 



Conularia miseneri, sp. nov. 

 Plate I, Figs. 1 A, B, C 



Shell elongate-conical, rhomboidal in cross section, rarely 

 exceeding 40 millimeters in length. Apical angle from 15 to 

 18 degrees. Lateral angles strongly rounded. Lateral faces 

 gently concave along the median line. Transversely and 

 longitudinally striated. The transverse striations alw^ays are 

 well defined; from 22 to 25 in a length of 5 millimeters; cur- 

 vature gently convex across the median parts of the lateral 

 faces, curving gently downward (toward the apical end) at 

 the lateral angles. This downward curvature is greater toward 

 those angles which are at the extremities of the longer trans- 

 verse diameter, and the maximum convex curvature of these 

 transverse striae lies nearer those angles which are at the 

 extremities of the shorter transverse diameter of the shell. 

 The longitudinal striae frequently are indistinctly defined 

 along certain parts of the shell, especially near the upper end 

 where the transverse striae often are much closer, suggesting 

 gerontic conditions. In most specimens, however, parts of the 

 .shell show the longitudinal striae, but much less distinctly 

 than the transverse ones. The number of longitudinal striae 



