232 HELIX-IBERUS. 



suture ; the last whorl slightly dilated, rotund, slightly flattened 

 below, deflected in front ; aperture very oblique, almost circular, 

 little lunate, white within ; pefistome thin, acute, distinctly lipped 

 with white inside ; margins converging, joined by a scarcely colored 

 callus ; upper margin straight ; outer and basal margins little 

 reflected ; the columellar margin dilated and covering the greater 

 part of the umbilicus, and slightly tinted with rose at the insertion. 

 (Kob.) 



Alt. 10, greater diam. 16*, lesser 14 mill. 



Alt. 9, greater diam. 15, lesser 13 mill. 



Rocciedel Telegrafo, summit of Mt. Argentaro. 



H. talamonica KOB., Rossm. n. f. v, p. 75, f. 880. 



H. CALTABELLOTENSIS Kobdt. PI. 26, figs. 41, 42, 43. 



Shell depresed-globular with rather circular circumference, entirely 

 covered-umbilicate ; the spire slightly conical, the apex small, 

 smooth, but little projecting. Shell strong, but little shining, 

 roughly rib-striate, and malleated ; yellowish-white, four-banded, the 

 upper three bands deep chestnut-brown, interrupted and coalescing 

 into streaks ; the fourth band upon the under side consisting of square 

 and arrow-shaped spots; the entire pattern very beautifully distinct. 

 There are five well-rounded, slowly increasing whorls, which are 

 separated by a slightly irregularly impressed suture. The last whorl 

 is somewhat inflated, at the periphery and below convex, suddenly 

 strongly deflected in front. The aperture is very oblique, lunate- 

 ovate, and with the exception of the light middle zone deep chestnut- 

 brown within. The peristome is acute, thin, straight, having a dis- 

 tinct yellowish-white lip within. The nearly parallel, hardly con- 

 verging margins are united by a very thin callus. The columellar 

 margin is arcuate, but the concavity is occupied by a straight com- 

 pressed fold. The umbilical region is of intense chestnut-brown 

 color. (Kob.) 



Alt. 13, greater diam. 20, lesser 18 mill. 



Alt. 12, greater diam. 17, lesser 15 mill. 



Caltabellota, Sicily. 



H. ( Iberus ?) caltabellotensis KOB., Rossm. n. f. iv, p. 72, f. 644, 

 645. 



This peculiar form is separated from globularis (which is closely 

 allied in sculpture) by the circular contour and strong inflation, as 

 well as the umbilical spot. 



