254 HELIX. 



outer and basal margins well rounded, columella straighter, thick- 

 ened, joined with the superior margin by a thin callus; aperture 

 within deep brown, in banded examples showing the zones, and 

 more or less distinctly white edged. 



Diam. 43, alt. 37 mill.; Diam. 36, alt. 32 mill. (Kobelt.) 



Amorgos and Santorin, Grecian Archipelago. 



H. latecava Mousson, inss. is synonymous. 



The Amorgos form is large, unicolored, indistinctly sculptured on 

 the last whorl; the specimens from Santorin are smaller, with 

 indications of bands, higher spire, sharper sculpture, smaller aper- 

 ture, and the basal margin distinctly reflected. 



H. MALTZANI Kobelt, 1883. PI. 59, figs. 50, 51. 



Narrowly rimate-perforate, turbinate-globose, rather solid, rugose 

 or costulately striate, decussated by microscopic fine spiral lines, 

 grayish yellow, ornamented with five more or less distinct chestnut 

 bands; spire short conoidal, apex large, obtuse, smooth ; suture im- 

 pressed, crenulated, whitish-margined ; whorls 4 J, slightly convex, 

 the last inflated, descending anteriorly ; aperture rotund-lunate, 

 slightly oblique ; peristome simple, slightly thickened, distinctly 

 labiate, the margins scarcely converging, parietal callus none or 

 very thin ; columellar, basal and outer margins regularly arcuate, 

 the columellar, at its insertion above the perforation, arcuately 

 reflexed ; fauces brown, sometimes with translucent bands. 



Diam. 37-41. alt. 36-40 mill. (Kobelt.) 



Near Smyrna. 



Distinguished from H. godetiana by the distinct umbilical fissure, 

 sharper striation, etc. 



**# 



Cantareus Risso, 1826. 

 H. APERTA Born, 1780. PL 58, figs. 42-44. 



Imperforate globular, thin, shining, brown, olive, or greenish 

 irregularly, sometimes quite coarsely, striate ; spire very short, apex 

 minute, smooth ; sutures well impressed ; whorls 3-3o, very rapidly 

 widening, the last globular, slightly descending anteriorly ; aperture 

 over f the entire altitude, ovate-lunate, oblique, whitish within, outer, 

 basal and columellar margins regularly arcuate, thin, very narrowly 

 siibexpanded, the parietal wall and umbilical tract covered by a 

 very delicate whitish callus. Diam. 18-26, alt. 20-30 mill. 



Southern Europe; Algiers. 



