256 HELIX. 



Has recently been referred to H. explanata as a ribbed variety 

 (Jour, de Conch. 104, 1887), but has a half whorl additional to that 

 species, although smaller. 



H. IDIA, Bourg. et Letourn. PI. 62, figs. 23-25. 



Widely umbilicated, irregularly, flexnously costulate; whorls 4, 

 with carinated suture, last whorl very sharply carinated, carina 

 blade-like, umbilical region defined by a sharp angle. 



Diam. 14 mill. 



Tunis. 



H. DEPRESSULA, Parreyss. PI. 62, figs. 6-8. 



Widely umbilicated, rugosely striate, yellowish white; whorls 6, 

 carinated, subplanate above, last whorl whith compressed, crenula- 

 ted carina, scarcely descending in front, base convex; peristome 

 acute, labiate within. Diam. 20 mill. 



Algeria. 



H. SIGENSIS, Kobelt. PL 62, figs. 1, 2. 



Widely umbilicated, plane above, somewhat solid, chalky white, 

 or with inferior chestnut bands; whorls 5, striate-costulate, with 

 irregularly carinate suture, last whorl slightly descending in front, 

 the compressed peripheral carina white-crenulated, base inflated, 

 with whitish ribs, more distinct than above ; peristome acute, labiate 

 within. Diam. 17 mill. 



Or an, Algiers, near Nemours, at the old Portus Sigensis. 



H. Jolyana, Bourg., has been referred here. 



i 



H. CATOCYPHIA, Bourg. PL 63, figs. 26-28. 



Rimately perforate, whitish, chalky, striate; whorls 4J, rapidly 

 increasing, planate above, the last acutely carinated, not descending, 

 base convex ; peristome acute, labiate within, parietal wall with a 

 tubercle. Diam. 10 mill. 



Chateau cVIf, near Marseilles, France. 



H. SETUBALENSIS, Pfr. PL 63, figs. 29. 30. 



Narrowly umbilicated, somewhat solid, closely lamellarly costate, 

 opaque, fulvous white; whorls 5, planulate, exserted, serrulately 

 carinated, the last not descending, base convex; peristome acute, 

 labiate within. Diam. 9 mill. 



Near Setubal, Portugal; Alicante, Spain. 



H. serrula, Morel, is a synonym. 



