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. 53 6 J 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 la&t scarcely descend- 

 ing in 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, 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. 



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

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



