78 Aug. F. Focrste 



and northern Kentucky, west of the Cincinnati geanticline. The 

 type specimens were found at Madison, Indiana. It has been found 

 also on Camp creek in Clark county ; at the Dog Falls on Saluda 

 creek, on the road from Hanover to the Landing, on the Hitz road 

 and on the Hanging Rock road at Madison, at the falls on Crooked 

 creek, one mile northeast of Madison on the road to Riker's ridge, 

 at the falls on Razor creek, along the road a mile and a half south- 

 east of Belleview', a mile north of Belleview, two miles south of 

 Poplar ridge, all in Jefferson county, Indiana. Also four miles west 

 of Cross Plains; and one mile W'Cst of Ballstown, in the "mottled" 

 limestone. 13 feet above the top of the Bosberg quarry and about 

 20 feet above the "shale bed," in Ripley county, Indiana. In the 

 mottled limestone, 16 feet above the shale bed, at the railroad cut 

 west of Weisburg, in Dearborn county, Indiana. It occurs at nu- 

 merous localities between the locality along the railroad two miles 

 east of Tucker, in Jefferson county, and the area east of Pewee 

 Valley, east of Floyds creek, in Oldham county, Kentucky. 



Cyrtoceras hitzi, sp. nov. 



(Plate I, figs. 7 A, B ; Plate II, figs. 23 .4,B,C.) 



In the Hitz layer at Madison, Indiana, a very small species of 

 Cyrtoceras occurs which is characterized by prominent, transverse 

 striae, which are deflected along the ventral line like a letter V, 

 rounded at the base. Laterally, these striae are directly transverse 

 and approximately straight, or at least not conspicuously wrinkled. 

 At the small end of the fragment, 3.3 mm. in diameter, the trans- 

 verse section is almost circular. At the larger end, 8 mm. in width, 

 the lateral diameter may exceed the dorso-ventral but the dorsal 

 side is not preserved. Along its length of 17 mm. there are 30 

 transverse striae. At the larger end, there are 7 in a length of 5 

 mm. The curvature of the shell is moderate, less than 2 mm. on 

 the ventral side of the specimen at hand. The number of sepia is 

 approximately the same as that of the transverse striae. The sipho 

 is unknown. 



The small curvature of the shell, the sharp transverse striae 

 deflected backward along the ventral line, and the comparative 

 strightness of these striae laterally are the distinguishing character- 

 istics of Cyrtoceras hit.'^i. 



Cryptolithus tessellatus, Green 



The lowest horizon at which the species long familiarly known 



