HELIX. 237 



H. SEMENOWI, Martens. PL 57, figs. 99-1, 2. 



Narrowly unibilicated, solid, violaceous white, not banded ; 

 whorls 5, tumid, the last scarcely descending, narrow ; peristorne 

 simple, obtuse, thickened within. 



Diam. 1O5 mill. 



Thianschan Mts. Turkestan. 



Var. DEPRESSA, Mousson, (fig. 2.) 



H. DENDROPHILA, Mabille. PL 57, figs. 5, 6. 



Narrowly umbilicated, rather solid, opaque, white or yellowish 

 with chestnut bands, apex purple, surface very closely striated ; 

 whorls 6-6 J, somewhat convex, rapidly increasing, with distinct 

 suture, the last larger, obsoletely angulated ; peristome acute, 

 remotely lipped within. Diam. 10-14 mill. 



Grand Canary Is. 

 H. AGLAOMETA, Mabille. PL 57, figs. 15-17. 



Perforate, solid, opaque, a little shining, irregularly densely 

 striate, greyish brown, with subinterrupted dark bands and cor- 

 neous maculations, apex yellowish ; whorls 5-6, rapidly enlarging, 

 the last dilated towards the aperture, not descending; peristorne 

 ;acute, slightly thickened within. Diam. 10 mill. 



Grand Canary I. 



H. LANCEROTTENSIS. Webb and Berth. PL 57, figs. 9-12. 



Subcovered perforate, rather solid, striulate, white, with inter- 

 rupted chestnut bands, apex blackish ; whorls 6, the last inflated, 

 scarcely descending anteriorly; peristome simple, labiate, sometimes 

 bilabiate within. Diam. 7'75 mill. 



Ins. Lancerotte, Canaries. 



Vars. Webbii and BertJieloti are smaller, the former with nar- 

 rower, the latter with wider umbilicus. 



Var. ADOPT ATA, Mousson. PL 57, figs. 11, 12. 



Narrowly unibilicated, somewhat thin, striulate, distinctly striate, 

 fasciate and maculate with light corneous and white ; whorls 4J, 

 subtumid at the suture, the last not descending nor inflated, obso- 

 letely angulated ; peristome simple, acute. 



Diarn. 6*5 mill. 



Ins. Gomera, Canaries. 



H. ORBIGNYI, Webb and Berthelot. PL 57, fig. 98. 



Narrowly umbilicated, thin, irregularly more or less rugosely or 

 plicosely striate, whitish, clouded, maculated or fasciate with cor- 



