42 Cincinnati Society of Natural History. 



The very prominent transverse ribs, about nine on eacli whorl, are 

 lamelhir, angularly produced above; their margin is reflected to 

 the right. The fine revolving lines continue on their right side. 

 The left side, however, is sharply defined from the surface of the 

 whorls. The ribs continue over the base, which is defined by an 

 elevated carina. Ai)erture circular. 

 Newton. 



Eglisia retisciilpta, n. sp. 



Plate II. Figure 9. 



Spire subulate. Whorls regularly rounded. Covered with 

 five elevated, flattened longitudinal lines, crossed by numerous 

 oblique, flattened, transverse ribs, smaller in size. Aperture ellip- 

 tical. 



Wautubbee. 



Natica Ncwtoncnsis, n. sp. 



Plate II. Figure 12. 



Shell thick. Depressed globular. Spire low. Suture dis- 

 tinct. Whorls six, convex ; body whorl flattened above. Um- 

 bilicus deej). Inner lip somewhat spreading over the body whorl. 



Newton, Wautubbee, Lisbon, Ala. 



The type specimen is from Newton. I he form is character- 

 ized by its robust, subquadrate shape. 



S/s^d/rt/ts, subg. S(i;c7tica, nov. subgen. 



Shell globosely auriform. Umbilicus wide. Inner lip with- 

 out callus. Umbilicus, basal and upper part of the whorls spirally 

 striated. 



This subgenus approaches Natica. 



Sigarctus [Sigatica) Bocttgeri, n. sp. 

 Plate II. Figure 13. 



Spire nearly one third of the shell. Whorls five, flattened 

 above. Suture distinct. Spiral lines near the margin of the um- 

 bilicus very strong. 



Newton, Miss., Lisbon, Ala. 



Sigarctus iriconstans, n. sp. 



Plate II. Figure 18, i8r?. 



Auriform. Flattened. Covered by elevated, flattened 

 striae. Three and a half whorls, the last of which is finely striated. 



