SB BULLETIN OF THE LABORATORIES 



volutions is concave, the outer margin is distinctly angled, and there 

 is apparently an inner carina at the suture line. The under surface is 

 evenly convex, widely umbilicate. The spire is slightly elevated, but 

 is poorly preserved. The lines of growth are irregular. Our own 

 opinion is that the present form is intermediate between E. obtusus 

 and E. latus. The figure lias been p irtly restored and must not be 

 too implicitly trusted except for size and general configuration. 



Free-stone layers of middle Waverly, 6 miles northwest of (iran- 

 ville. Collected by W. F. Cooper. 



Eaoniphalas (spirorhis, H. ?) 

 (Plate II, F,g. 33.) 



(Fig 33b is quite incorrect, the appearance of a lip is misleading 

 and the spire is rather higher. The specimen having been since re- 

 moved from the matrix these errors have been delected. ) 



No opportunity has been afforded to compare with Hall's E spir- 

 orbis hence our reference is based solely on memory. Shell small, el- 

 evated, closely coiled, umbilicate, having from four to five volutions. 

 Volutions rather evenly convex, deeply excivated above for the supe- 

 rior volution, otherwise nearly circular in section Height nearly equal 

 to the diameter of the largest volution. 



Height of four volutions 7 mm ; diameter of lower volution near- 

 ly 9 mm. Free-stone midJle Waverly. This species reminds one of 

 E. spergensis, var. pianorb'formis, but the spire is higher. 



Bellerophoii cj/rtoUtes, H-'ill- 

 (Plate VIII, Fig. 20; Plate IX, Fig. 29.) 



Shell of medium size, laterally s)mewhat compressed, obtusely 

 carinate ; whorls very rapidly enlarging, slightly embracing, transverse 

 section rhombic, sub cordate, broadest near the umbilicus; dorso-lat- 

 eral slope flat or somewhat concave peripherally, strongly curved near 

 umbilicus; umbilicus rather small. Aperture sub-cordate with a deep 

 but not abrupt, acute notch. 



Surface marked by numerous sharp geniculate or strongly curved 

 transverse strice meeting on the dorsum with an acute angle. Besides 



