168 BULLETIN OF THE 



Zonites sculptilis. 



Plate III. Fig. 9. 



For the sake of comparison with the proceeding species, I have given other 

 figures here of the true Z. sculptilis. 



Zonites Simpsoni, Pilsbry. 



Plate I. Fig. 8, 



I give an enlarged figure of an authentic individual of this species. For 

 the description see Third Suppl., p. 218. 



Zonites Diegoensis, Hemphill. 

 Plate III. Fig. 3. 



Shell minute, umbilicated, thin, light horn-colored, with delicate incremental 

 striae, globose; whorls 3^, convex ; base swollen; suture deep; umbilicus broad; 

 aperture narrow, rounded ; peristome tliin, acute, its ends approximated, the inner 

 one slightly reflected. Greater diameter 3i mm., lesser 1^; height If mm. 



Near Juhan City, San Diego Co., California. On Cuyamaca Mountain, 4,500 

 feet elevation. 



The above is Hemphill's description. My figure is drawn from an authentic 

 specimen. 



Zonites cuspidatus, Lewis. 



Vol. v., Fig. in text ; Suppl., Plate 11. Fig. C. 



Shell imperforate, small, slightly convex above, flattened below ; light horn 

 color, shining; whorls 6, gradually increasing in size, with wrinkles of growth, 

 the last not descending at tlie aperture ; peristome thin, acute ; aperture 

 rounded, bearing within behind the peristome a white callus, on which is 

 one subcentral and a second basal, erect, recurved tooth-like pi-ocess, sepa- 

 rated by a rounded sinus ; base often blackish, showing the white callus 

 prominently. Greater diameter 8 mm., lesser 6 ; height 4* mm. 



Zonitps cerinoideus, var. cuspidatus, Lewis, Proc. Phila. Ac. Nat. Sci., 1875, p. 334. 

 Zonites cuspidatus, W. G. Binnet, Ann. N. Y. Ac. Nat. Sci., Vol. I. p. 359, Plate 

 XV. Fig. C ; Suppl. to Terr. Moll. V., Plate II. Fig. C. 



Mountains of Tennessee and North Carolina: a species of the Cumberland 

 Subregion. 



The tooth-like processes within the aperture, strongly curved towards each 

 other, form an arched space. 



