THE NAUTILUS. 



129 



3. 



4. 



r Periphery carinate, umbilicus narrow carinatui. 



(Periphery obtusely angled, umbilicus wider. . . . umbilicatut. 



( Spirally striate, periphery carinate tantillus. 



(_No spiral striae, periphery rounded tmithii. 



VITEEA LEWISIANA N. SP. 



BY GEO. H. CLAPP. 



Shell small, depressed widely, perspectively umbilicate, all whorla 

 showing to the apex, umbilicus contained about five times in the 

 diameter of the shell ; yellowish-white, translucent, the inner whorls 



Upper figures, Vitrea lewisiana Clapp. Type, 18. 



Lower figures, " dalliana ' Simpson ' Pils. x8. Miami, Fla. 



showing through the body of the shell, highly polished ; the delicate 

 growth lines are very regularly spaced and close together, smooth 

 below. Spire much flattened ; sutures well impressed, margined ; 

 whorls 3^, slightly convex, the last wide. Aperture oblong-lunate, 

 depressed above, lower margin parallel with the base, lip simple. 



Gr. diam. 3^, lesser 2.8, alt. l mm. 



Type from Monte Sano, near Huntsville, Ala., also found at 

 Wetumpka and Gurley, Ala., so probably extends over the whole 

 eastern part of the state. Bare. Collected by Herbert H. Smith. 



