1880.] NATURAL SCIENCES OF PHILADELPHIA. 375 



•comparatively much move robust, and have the costal nodes and 

 revolving stria? considerably' more developed. 



SOLARIUM, Lamarck. 

 Solarium cupola, n. sp. PI. 20, fig. 14. 



Shell convexlA-^ conical, moiuid-like, of about five volutions ; 

 whorls ornamented with alternating coarse and very fine concen- 

 tric lines, and appearing double from a medial impression (the 

 shell apparently- of twice the number of volutions that it actually 

 possesses) ; base similarly ornamented as the upper surface, con- 

 vex, and strongly margined by the prolongation inferiorly of the 

 outer wall ; umbilical margin finely crenulated, the umbilicus 

 broadly open, and exhibiting the concentrically striated internal 

 volutions of the apex ; aperture rhomboidal. 



Length, | inch ; diameter, 1;^ inch. Cave Branch ; Knight's 

 Branch ; Wood's Bluff, Clarke Co., Ala. 

 Solarium delphinuloides, n. pp. PI. 20, fig. 13. 



Shell convexly conical, of about seven volutions ; the whorls 

 ornamented with several beaded revolving lines, two or more of 

 which near the upper margin, and one near the basal margin being 

 the most prominently defined; base convex, sub-marginall}' chan- 

 neled, and ornamented with numerous finely beaded revolving 

 lines, which become most prominent in the umbilical region; um- 

 bilical volutions distinct to the apex, transverseh' striated, super- 

 medially carinated ; umbilical margin crenulated ; aperture sub- 

 circular. 



Length, ^ inch ; diameter, f inch. Wood's Bluft\ Clarke Co., Ala. 



DENTALIUM, L. 



Dentalium micro-stria, n. sp. PI 20, fig. 3. 



Shell slender, considerably curved and greatly attenuated, 

 faintly striated, the stritB most conspicuous on the attenuated 

 portion ; posterior aperture entire, there being no fissure ; anterior 

 aperture circular. 



Length, 1| to 2 inches. Cave Branch ; Wood's Blufi", Clarke 

 Co., Ala. 



fusus pagodiformis (Plriiroinma .' pagodi, Heilpr., Proceedings of the U. S. Nii- 

 tional Museuiu, 1880), si.ecific name /<a(/o(/« pre-occupiod by Adains and ReeTe. 



