THE NAUTILUS. 



VOL. ix. MAY, 1895. No. 1 



DESCRIPTIONS OF TWO NEW EOCENE SOLARIIDJE FROM ALABAMA. 



BY T. H. ALDRICH. 



Solarium elaboratum Conrad vir bimixta. Plate I, figs. 1, 2, 3. 



Shell elevated, peripheral margins minutely beaded, flattened, 

 acute; umbilical rib very small and placed close to suture, umbili- 

 cal carina prominent and beaded. Base very finely striated with a 

 strong beaded rib close to the periphery. Spiral ornamentation ap- 

 proaching Solarium cupola Heilpr. Max. diam. 15 mm., alt. 7 mm. 



Locality : Matthews' Landing beds near Rosebud, Wilcox Co., 

 Ala. 



This variety, while belonging to the acutum-elaboratum section, 

 has a combination of characters approaching other sections. The 

 drawings executed by Dr. McConnell, of AVashington, show this 

 form so beautifully it is scarcely necessary to describe it. 



Prof. W. H. Ball, in Trans. Wagner Free Inst. Science, Vol. 3, 

 part 2, p. 323, Dec. 1892, has divided the Eocene Solariums into 

 four sections, and, by letter to me, has lately added a fifth, viz. : 

 Section DINAXIS Dall. " Spire flattened, with the circumference 

 of shell forming the periphery ; the umbilicus wide, nearly funicu- 

 lar, with thread-like spiral ribbing or none, the umbilical carina 

 simple or finely granular, forming the base of the shell." This new 

 section includes S. alabamense Dall, and the following new species. 



