HELIX. 41 



below, not shining, maculated and tessellated with white and chest- 

 nut, suture well impressed; whorls 5, convex, regularly increasing, 

 the last with carinated periphery, shortly deflected in front, base 

 convex; peristome simple, acute, shortly reflected below, margins 

 approaching. Diam. 62-62 mill. 



Ins. Lanzarote. 



Described by Lowe as H. torrefacta, a name preoccupied by C. B. 

 Adams; therefore changed by Wollaston to H. Loweana, preoccu- 

 pied by Ferussac ; finally by Furtado, as above. 



H. CALVA, Lowe. PI. 8, figs, 40, 41. 



Covered perforate, rather thin, diaphanous, costulate-striate above, 

 smooth below, horny white, narrowly, obsoletely, doubly banded 

 with chestnut; whorls 7, slightly convex, the last scarcely descend- 

 ing iii front, periphery obsoletely angulated ; peristome thin, sub- 

 expanded, white lipped within. Diam. 8*5 mill. 



Madeira. 

 H. GALEATA, Paiva. PL 8, fig. 49. 



Covered perforate, somewhat solid, obliquely costulate-striate 

 and brownish corneous above, corneous white, smooth and shining 

 below, with two obsolete brown bands, suture impressed; whorls 8, 

 slightly convex, the last angulated, descending anteriorly, paler 

 towards the aperture ; peristome simple, white-lipped within, basally 

 somewhat reflected, margins remote. Diam. 9 mill. 



/ Madeira. 



It is H. calva, var. galeata, Lowe. 



H. VESPERTINA, Morelet. PL 9, figs. 65-67. 



Perforate, thin, smooth, brownish corneous, with an obscure light 

 band below the carina, closely, lightly striate; whorls 5-5 i, moder- 

 ately convex, slowly increasing, the last not deflected; peristome 

 simple, margins remote, connected by a callus. Diam. 8 mill. 



Ins. Terceira, Azores. 



Unfigured Species. 



H. CAPSELLA, Lowe. Madeira. 



H. SPIRORBIS, Lowe. . Madeira and Deserta Australia. 



H. COMMIXTA, Lowe. Porto Sancto. 



Section V. TECTULA, Lowe. 1854. 

 H. LYELLIANA, Lowe. PL 9, fig. 83. 



Kimately perforate, solid, striulate, opaque, brownish above, mar- 

 bled with white, with a narrow chestnut band, suture plane, 



