96 HELIX §. 19. 



angulata; perist. simplex, acutum, margine dextro superne 

 arcuato, columellari tenui, verticali, breviter reflexo. — Diam. 

 maj. 6, min. 5, alt. 3% mill. (Mus. Bens.) 



Helix petrobia Bens. in Ann. and Mag. 2 d. ser. VII. 1851. p. 10-5. 



— — Chemn. ed. II. Helix N. 923. t. 141. f. 25 — 27. 

 Habitat sub lapidibus, prope Higli-Constantia Promontorii Bonae 

 Spei. 



407. H. rariplicata Benson. 



T. umbilicata, depressa, tenuis, cornea , plicis arcuatis 

 subdistantibus munita; spira parum elevata; sutura profunda; 

 anfr. 4 convexi, ultimus teres, non descendens; umbilicus an- 

 gustus, pervius; apertura parum obliqua, lunato-subcircularis; 

 perist, simplex, rectum, marginibus conniventibus. — Diani. 

 maj. 41/4, min. 31/2, alt. 2 mill. (Goll. Nr. 182.) 

 Helix raiiplicata Bens. in litt. 



— — Pfr. in Zeitschr. f. Malak. 1849. p. 71. 



— — Bens. in Ann. and Mag. 2 d. ser. VI. p. 254. 

 — Chemii. ed. II. Helix N. 824. t. 129. f. 31—33. 



— — (Patula) Albers Helic. p. 64. 



Habitat in Promontorio Bonae Spei: «Green Point, Lighthouse» 

 (Benson). 



408. H. sabuletorum Benson. 



T. umbilicata, orbiculato-depressa, solidiuscula, utrinque 



confertissime striata, plicisque arcuatis distantioribus notata, 



non nitens, pallide cornea; spira convexiuscula, apice obtusa; 



sutura profunda; anfr. ^Y^ — 5 lente accrescentes, convexi, 



ultimus rotundatus; umbilicus latiusculus (fere y^ diametri 



testae), profundus; apertura vix obliqua, lunato-rotundata ; 



perist. simplex, marginibus conniventibus, columellari breviter 



subreflexo. — Diam. maj. 47^, min. 4, alt. 2 mill. (Goll. Nr. 183.) 



Helix sabuletorum Bens. m Ann. and Mag. 2 d. ser. VII. 1851. 



p. 105. 



__ _ Chemn. ed. II. Helix N. 968. t. 147. f. 16. 17. 



Habitat ad «Hout-Bay, Strand» non procul a vico Somerset, 



et ad Kalk-Bay Promontorii Bonae Spei , in arenosis prope lit- 



tora maris. 



409. mutata Gould. f (Proc. Bost. Soc. 1846. p. 167.) Mon. I. p. 100. 



410. radiella Pfr. (Goll. 184. — Chemn. ed. nov. II. 



p. 132. — Patula Alb. p. 65. — Hel. parclaUna 

 Desh. in Fer. liist. I. p. 88. N. 120. — Helkella 

 undulata Fer. Mus.) - - - 100. 



411. costellata Orb. (Coll. 185.) - - - 101. 



412. lyrata Couth. •[• [Gould in Proc. Bost. Soc. 184 6. 



p. 167; Exped. shells 1851. p. 39. f. 34.) . . . - - - 101. 



