HELIX. 9 



H. TRICASTINORUM, Florence. PI. 2, figs. 61-63. 



Rather narrowly umbilicated, solid, thick, cretaceous, subopaque, 

 with close, undulating striae, equally strong below, yellowish white 

 to reddish yellow, without or with chestnut bands varying in num- 

 ber, thin, not continuous, faint, especially towards the umbilicus ; 

 whorls 4 2 -5, with moderate suture, increase at first slow, but rapid 

 in the last whorl; peristome acute, with a slight whitish or rosy in- 

 terior thickening. Diam. 12 mill. 



Southern France. 

 H. FEDTSCHENKOI, Mart. PI. 2, figs. 64-66. 



Widely umbilicated, slightly striate, whitish, spire scarcely ele- 

 vated; whorls 4f, convex, with rather deep suture, last whorl 

 rounded, slightly descending in front ; peristome acute. 



Diam. 15 mill. 



Kulikalan, Turkestan; alt. 9500 ft. 



H. MERIDIONALIS, Parr. PI. 1, figs. 39, 40. 



Differs from H. profuga, Schm., in its flatter form, stronger stride 

 and wide umbilicus. 



Dalmatia, Corfu. 



Is H. striata, var. of Rossmassler. 



H. SUBSTRIATA, Clessin. PI. 1, figs. 41-43. 



Moderately umbilicated, rather solid, striulate, shining, milk- 

 white, unicolored or banded with chestnut ; whorls 5, slowly, regu- 

 larly increasing, convex, with deep suture, last whorl rounded, not 

 descending in front ; peristome acute. Diam. 11 mill. 



Crimea. 

 H. SUBCOSTULATA, Bourg. PI. 2, figs. 67-69. 



Perforate, chalky, Avhitish, the earlier whorls obscurely maculated 

 with corneous, irregularly strongly costulate, suture impressed ; 

 whorls 6, convex, the last bluntly angulated, slightly descending at 

 the aperture ; peristome simple, acute. Diam. 5-6 mill. 



Algiers. 



H. AGRIOICA, Bourg. PI. 2, figs. 70-72. 



Narrowly umbilicated, chalky, whitish, with a few translucent 

 corneous maculations above and below, distantly costulate above, 

 sculpture weaker on the base, suture impressed ; whorls 6, the last 

 bluntly angulated, suddenly deflected at the aperture; peristome 

 acute, white-lipped within. Diam. 7 mill. 



Algiers. 



