164 HELIX. 



H. SAULCYI d'Orbigny, 1839. PL 49, figs. 45, 46. 



Imperforate, globose-conic-depressed, rather solid, greyish, or 

 purplish without lustre, encircled by five bands of deep brown, the 

 supraperipheral and following bands generally confluent, the whole 

 surface covered with a fine netting or malleation formed by anas- 

 tomosing oblique wrinkles of white or light grey color, and a 

 secondary sculpture of microscopic granulations; apex and first 1 

 whorls dark brown, smooth, shining; suture linear, becoming im- 

 pressed near the aperture; whorls 41, gradually increasing, the last 

 somewhat widened toward the aperture, with an indication of an 

 angle at its origin, gibbous below, abruptly and rather deeply de- 

 flexed anteriorly, and subconstrirted behind the peristome; aperture 

 very oblique, oblong-lunate; peristome expanded, pinkish, arched 

 above and below, the ends converging, joined by a scarcely visible 

 yellowish parietal callus ; basal margin appressed over the umbilical 

 tract, obviously dentately thickened within. 



Diam. 25, alt. 16 mill. 



Ins. Grand Canary. 



There is considerable variation in sculpture, the malleations being 

 sometimes arranged in more or less regular oblique series. 



Var. TEMPERATA Mousson, 1872. PI. 49, figs. 47, 48. 



Shell larger than H. saulcyi, spire less elevated, body-whorl more 

 angular, sculpture less coarse, columellar tooth smaller, peristome 

 more developed, thicker. Diam. 24, alt. 17 mill. 



Ins. Grand Canary. 



This form is closely allied to H. saulcyi, and is considered by 

 Wollaston to be merely a variety of that species. 



H. BAIA Mabille, 1883. PI. 47, fig. 76. 



Shell globose-depressed, imperforate or subperforate, somewhat 

 thickened, very solid, destitute of color or cuticle, coarsely malleate, 

 the malleations disposed in oblique series, strongly striate, the strise 

 interrupted ; spire elevated, convex, apex minute, smooth, concolor- 

 ed; whorls 5J-6, convexo-depressed, subregularly, the outer very 

 rapidly, increasing; sutures impressed; last whorl large, rounded, 

 inflated, very suddenly and briefly descending anteriorly, subcon- 

 stricted at the aperture, inflato-convex below; aperture oblique, 

 rotund-lunate, peristome thickened reflexed, acute, margins not con- 

 verging, joined by a well-marked callus, the basal margin sub- 

 straightened, adnate, with a lamellose tooth within. 



.Diam. 28-34, alt. 18S-2LJ mill. 



Ins. Grand Canary; fossil. 



