186 HELIX. 



<columellar somewhat thickened, appressed, concave, very decidedly 

 -callous at its insertion. Diam. 21-23, alt. 10 mill. 



Ins. Teneriffe Canaries. 



Smaller, thinner, more fragile than H. hedeia, aperture shorter, 

 larger, peristome thinner. 



H. HEDEIA Mabille, 1882. PI. 49, figs. 35, 36. 



Shell imperforate, wide depressed-subglobose, opaque, thick, not 

 lustrous, rufous brown, with one to three faint brown bands, striate, 

 the striae granulose ; spire subdepressed convex, apex obtuse, large, 

 smooth ; whorls 5, subregularly increasing, the first flattened, balance 

 convex, separated by impressed sutures ; body- whorl large, rounded, 

 with a salient line at the periphery, compressed at the suture, 

 obliquely turgid before the aperture slightly constricted, abruptly 

 descending; aperture oblique, lunate, transversely suboblong; peri- 

 stome thick, labiate within, well expanded, external margin arcuate, 

 concave, appressed, with a long lamelliform scarcely salient tooth 

 inside, strongly callous at its insertion. Diam. 25, alt. 12 mill. 



Ins. Teneriffe, in forests at the feet of trees. 



H. BERKELEII Lowe, 1861. PL 53, figs. 22, 23. 



Closed perforate, depressed, sublenticular, acutely carinated, rather 

 thin, obliquely irregularly rugose-striate, and asperate with large, 

 irregular tubercles, last whorl rough, cinnamon colored, the granules 

 light-colored, with two superior and one inferior brown band ; spire 

 slightly or scarcely elevated, apex minutely granulate ; suture im- 

 pressed; whorls 4-4i, the last rather flattened, abruptly deflexed 

 anteriorly, base somewhat flattened, lightly granulate; aperture 

 nearly horizontal, lunate-oval, shining and granulated within ; peri- 

 stome thin, white or brownish, the margins subparallel, slightly 

 converging, the upper widely expanded, basal broadly reflexed, 

 dilated and adnate over the umbilical tract. 



Diam. 19-20, alt. 7 mill. 



| Ins. Grand Canary. 



H. berkeleyi of Wollaston and of Mabille is the same. 



The affinities of this rare species are with H. quadricincta Morelet, 

 etc., not with Iberus, with which it has been grouped by authors, a 

 4subgenus which is not represented in the Canary archipelago. 



H. DIGNA Mousson, 1872. PL 62, fig. 38. 



Covered perforate, robust, depressed-conic, arcuately widely 

 plicate-costulate, very minutely asperate, destitute of cuticle and 



