46 HELIX. 



Var. ATTRITA, Lowe. Figs. 80-82. 



Abruptly umbilicated, distinctly striated and minutely granulated, 

 light corneous, densely marbled with chestnut above, base bifasciate; 

 whorls 7, flattened, the last deflected in front, periphery obtusely 

 angular, base much inflated round the umbilicus. Diam. 10 mill. 



Porto Sancto. 



H. TABELLATA, Lowe. PL 9, fig. 69. 



Moderately umbilicated, thin, minutely rugose and granulated 

 above, marbled with chestnut and white, spire subplane, suture 

 impressed; whorls 5. flattened, slowly increasing, the last acutely 

 carinated above, scarcely descending in front, base convex, smooth- 

 ish, lighter color with a chestnut band ; peristome simple, margins 

 approaching. Diam. 7 mill. 



Ins. Madeira. 



H., TESTUDINALIS, LoWC. PI. 9, fig. 70. 



Rather widely umbilicated, somewhat solid, striulate and slightly 

 granular, diaphanous, corneous with opaque white strigations and 

 two chestnut bands; w r horls 7, scarcely convex, the last carinated, 

 tumid and deflected in front, base convex ; peristome simple, margins 

 approaching and joined by a callus. Diam. 19 mill. 



Ins. Porto Sancto. 

 It is H. Bulveriana, var. of Reeve. 



[Turritella, Woll.] 



H. CHE1RANTHICOLA, Lowe. PL 9, figS. 2, 3. 



Narrowly umbilicated, somewhat solid, rugosely striate and scaly 

 granose, whitish, with a wide chestnut band at the suture, and a less 

 distinct one on the base, suture impressed ; whorls 8, convex, tumid, 

 with angulated periphery, the last deflected in front; peristome 

 acute, simple, margins approaching, joined by a callus. 



Diam. 9'5 mill. 



Ins. Porto Sancto, and Baxo. 

 Var. MUSTELINA, Lowe. Fig. 3. 



Smaller, more uniformly and roughly granulated, whorls flatter, 

 without keel, only obsoletely banded. 



Connected with the type by intermediate forms according to 

 Wollaston. 



Section VIII, CALLINA, Lowe. 1854. 

 H. ROTULA, Lowe. PL 9, fig. 4. 



Covered perforate, striate and granulate, granules oblong, a little 

 shining, fulvous, marbled with yellow, with narrow chestnut bands, 



