226 HELIX. 



ish brown bands, the upper one usually widest, sometimes the bands 

 are obsolete ; whorls 5, the last descending anteriorly, the periph- 

 ery obtusely angulated and base inflated ; aperture rosy, peristome 

 simple, dilated, red-lipped within, columella dilated, reflected-ap- 

 pressed. Diam. 18 mill. 



Western Morocco. 



H. epiglottidea, Beck is a synonym. 

 Var. ERYTHRONIXIA, Bourg. Morocco. 



H. IMPUGNATA, Mousson. PL 53, figs. 53, 54. 



Subcovered perforate, rugulosely striate, decussated by slighter 

 spiral lines, opaque, whitish, with numerous spiral, continuous or 

 interrupted brownish grey or brownish lines and dots, suture super- 

 ficial, thread-margined above; whorls 5, the last not descending, 

 periphery somewhat serrulate-carinate ; pe-ristome simple, widely, 

 thinly lipped within. Diam. 12 mill. 



Ins. Lanzarote, Canaries. 

 H. festiva, Lowe, Mss. belongs here. 



Var. SUBGEMINATA, Mousson. 



Whorls rounded-angular, striae a little scabrous, with a few wide 

 spiral sulci. 



H. PLANATA, Chemn. PL 54, figs, 62, 63 ; PL 53, figs. 55-57. 



Scarcely perforate, somewhat solid, closely undulately striate, 

 lightly decussated, whitish, unicolored or variously banded with 

 chestnut, bands sometimes interrupted ; whorls 4J, the last acutely 

 carinated, not descending in front, base turgid ; aperture whitish, 

 peristome acute, lipped within. Diam. 20 mill. 



North Africa, Spain, Canaries. 



H. helicella, Wood, H. calliostoma, Ad. and Keeve, and H. arie- 

 tina, Rossm. are synonyms. 



Var. ERYTHROSTOMA, Phil. Figs. 55-57. 



Aperture flesh-red, carina not much compressed, lower. 



H. SUBDENTATA, Fer. PL 54, figs. 74-76. 



Covered perforate, solid, striulate, very minutely decussated, 

 white, often with numerous brown spiral lines ; whorls 5, the last 

 rounded, descending in front, base convex ; aperture rosy, parietal 



