156 HELIX. 



with white vermicular raalleations, punctate, everywhere minutely 

 granulate, with five interrupted violaceous bands ; spire subpromi- 

 nent, apex obtuse, shining, punctulate-rugose, purplish ; whorls 4> 

 very rapidly increasing, separated by distinct sutures; body-whorl 

 large, compressed rotund, subconstricted, rapidly descending ; aper- 

 ture oblique, lunate, long ovate, slightly narrowed, margins sub- 

 parallel, not approximating, much thickened, labiate within, convo- 

 lutely reflexed, rosy tinted, outer margin sinuous, basal margin 

 straightened, lengthily adnate, planulate, with a strong lamina 

 within, and a heavy appressed callus at the insertion. 



Diam. 25-28, alt. 11-13 mill. 



Ins. Grand Canary. 



The cuticle is very thin, corneous, usually yellowish, sometimes 

 very bright, and exfoliates with great facility. The shell has some 

 resemblance to H. consobrina. 



H. JANTHINA Mabille, 1883. PL 48, figs. 1, 2. 



Imperforate, depressed-globose, solid, somewhat thickened, a 

 little shining, reddish, under a very evanescent, thin, yellowish 

 cuticle, paler beneath, ornamented with five brown bands, (the 

 second and third ordinarily coalescent), more or less interrupted 

 with yellow spots, costulate-striate, all over malleate and under the 

 lens minutely granulate; spire conic, apex obtuse, rugose-punctulate, 

 bright, purplish ; whorls 5, convex, regularly, very rapidly increas- 

 ing, separated by subirnpressed sutures ; body-whorl large, rotund- 

 tumid, obscurely subconstricted at aperture, slightly gibbous, regu- 

 larly descending ; aperture oblique, lunate, wide oblong-ovate, 

 fauces bluish-white, margins subdistant ; peristome thickened, re- 

 flexed, rose-tinted, outer margin sinuately incurved, basal substraight- 

 ened, with a broad appressed callus at the insertion, and a strong, 

 elevated, dentiform lamina, columella short, obliquely tortuous. 



Diam. 24-26, alt. 11-12 mill. 



Ins. Grand Canary- 



Allied to the preceding species. 



H. GRAVID A Mousson, 1872. 



Imperforate, solid, conic-globose-depressed, striate, rudely mal- 

 leate, destitute of cuticle and color; spire widely conoid, apex small, 

 smooth ; suture closely subimpressed ; whorls 5, first sensibly increas- 

 ing, flattened, the last somewhat descending, subinflated around the 

 suture, rounded, declivous above, subturgid below; aperture very 



