26 HELIX. 



H. Preauxii, Hartm., is a synonym. 

 Var. IMMODICA, Mousson. 



Thicker, more elevated, nodules less numerous but stronger; 

 peristome obtuse, thickened, continuous, subsolute. 



Grand Canary Isl. (subfossil). 



H. MODERATA, Mousson. PI. 5, figs. 20, 21. 



Minutely, varying to rather narrowly umbilicated, nodulously 

 rugose and bicarinated, greyish white, suture serrately margined 

 above; whorls 5, subexserted, the last strongly carinated on the 

 periphery, descending at the aperture, base slightly convex, radi- 

 ately nodulous; peristome acute, sublabiate, margins converging 

 but not continuous. Diam. 10 mill. 



Is. Fuerteventura and Lanzarote, Canaries. 



Described as a variety of H. Despreauxii, which it very probably 

 is, although both Pfeiffer and Wollaston consider it distinct. 



H. MIRANDA, Lowe. PI. 5, figs. 22-25. 



Narrowly umbilicated, rugose, with distant oblique corrugated 

 ribs, smoother on the base, more regularly plicate, whitish, with an 

 interrupted basal chestnut band ; whorls 5, obsoletely bicarinated, 

 periphery of last whorl crenulately carinated, the suture crenulated ; 

 peristome simple, acute. Diam. 7 mill. 



Ins. Gomera, Canaries. 



H. nodoso-striata, Mousson (figs. 24, 25), is apparently a not fully 

 grown specimen of this species. 



H. HESPERIDUM, Morelet. PL 5, figs. 14, 15 ; PI. 6, figs. 53, 54. 



Very narrowly perforate, slightly shining, greyish, the rugosities 

 lighter colored, base unifasciate, obliquely rugose, somewhat tuber- 

 culate; whorls 6, carin ate, peripheral carina tuberculate; aperture 

 brownish, peristome thin, simple. Diam. 8*5 mill. 



Near Moaador, Morocco. 

 H. INOPS, Mousson. PI. 5, figs. 26, 27. 



Minutely perforate, arcuately subcostulate-striate, slightly shin- 

 ing, white, suture impressed, simple; whorls 5i, a little convex, the 

 last not descending, periphery obtusely carinated ; peristome acute, 

 margins not approaching. Diam. 8 mill. 



Grand Canary Isl. 

 H. CYCLODON, Webb and Berthelot. PL 6, figs. 34, 35. 



Scarcely perforate, rugosely striated, brownish white, suture den- 

 tate ; whorls 7, flattened, dentately carinated, with a series of tu- 



