40 HELIX. 



vex ; aperture brownish, peristome simple, continuous, white, shortly 

 expanded. Diam. 6'6 mill. 



Ins. Porto Sancto. 

 H. candisata, Menke is a synonym. 



[Rimula, Lowe.] 



H. ARRIDENS, Lowe.. PI. 8, fig. 46. 



Perforate, thin light corneous, rugosely striate, hispid; whorls 5, 

 planulate, the last shortly deflected in front, periphery carinated, 

 base convex ; peristome acute, margins distant. Diam. 6 mill. 



Madeira. 

 H. FAUSTA, Lowe. PI. 8, fig. 47. 



Covered perforate, thin, rugosely striate, very shortly pilose, 

 chestnut color, marbled with yellow, suture impressed; whorls 5, 

 scarcely convex, the last carinate, deflected in front, base tumid; 

 aperture with a deep parietal dentiform callus, base tumid ; peristome 

 acute, sinuously callous within the base. Diam. 6 mill. 



Madeira. 



Wollaston has indicated a var. ft, robusta. 



H. OBSERATA, Lowe. PI. 8, figs. 37-39. 



Imperforate, rather thin, obliquely striulate, a little shining, 

 sparsely hispid, brownish, variegated with lighter color, suture 

 scarcely impressed; whorls 5, flattened, slowly increasing, the last 

 acutely carinated, shortly descending and crispate in front, base 

 convex, paler, with a brown band; lip simple, margins remote, 

 thickened and subsinuate within at the base, dilated over the umbil- 

 ical region. Diam. 7 mill. 



Madeira. 



Wollaston gives a var. BIPARTITA. 



H. ACTINOPHORA, Lowe. PI, 8, figs. 42, 43. 



Perforate, thin, rugosely striate, epidermis radiately laciniated, 

 brownish; whorls 5, flattened, the last carinated, shortly descending 

 in front, base convex ; peristome simple, sublabiate within, margins 

 remote. Diam. 9 mill. 



Madeira ; 3500 ft. alt. 



Wollaston has indicated a var. DESCENDENS. 

 [Lyrula, Wallaston.] 



H. USURPANS, Furtado. PI. 8, fig. 48. 



i Narrowly umbilicated, somewhat solid, very closely, obliquely, 



undulately striated, with rare spiral strise above, regularly decussated 



