IIELIX §. 72. 393 



rellexum, margine supero dilalato. columellari brevi cum basali 

 angulum obtusum formante. — R. a. = 1 : 2. — Diam. maj. 38, 

 min. 32, alt. \k.'l-, mill. (Colj. Nr. 622.) 

 Hdix Xystera VaL in 3Ius. Paris. 



— — Pfr. Symb. I. p. 4 1 . 



— — Chemn. ed. U. Helix N. 346. t. 6«. f. 4 — 6. 



— .... Fer. hist. t. 62 A. f. 5 — 7. 



— madagascariensis Encycl. melh. t. 462. f. 2? 



— lanx Desh. in Enc, meih. II. p. 261. N. 138. 

 Carocolla madagascariensis Lam. 10. p. 98. ed. Dh. p. 147. 

 Lucerna lanx Swains. Malac. p. 329. 



Habitat in insula Madagascar. 



Obs. Hic conf. H. omphalodes Nr. 972. 



1023. H. unicolor Pfi*. 



T. umbilicata, depressu, acute carinata, tenuis, fusca, su- 

 perne subtiliter striata, subtus lineis nonnuUis spiralibus elevatis 

 munita; spira depresso-conoidea; anfr. 5 planiusculi, sensim ac- 

 crescentes, ultiraus antice non descendens, basi convexus, ad 

 urabilicum angustum abrupte angulatus ; apertura rhoraboidea ; 

 perist. saturate fuscura, marginibus callo tenuissimo junctis, supero 

 dilatato, expanso, basali ascendente, stricto, columellari brevi, 

 dilatalo, umbilicum seraioccultante, cura basali angulatim juncto. 

 — Diam. maj, 32, min. 28, alt. 16 mill. (Mus. Guming. et Gruner.) 

 Helix unicolor Pfr. in Proc. Zool. Soc. 18 45. p. 64. 

 _ _ Chemn. ed. U. HeHx N. 345. t. 61. f 1 — 3. 



Habitat . . . . ? 



Obs. Constanler differt ab H. Xyslera unibilico anguslo, spira clala, an- 

 fracluum numero etc. 



1024. H. fulgurata Sowerby. 



T. umbilicata, depressa , acute carinata, lineis confertis lon- 

 gitudinalibus et transversis regulariter decussata, nitida, albida, 

 lineis rufis elegantissirae fulgurata; spira subplanata; anfr. 4 pla- 

 nuli, ultinms subtus fascia unica rufa ornatus, basi inflatus, circa 

 umbilicum anguste infundibuliformem angulatus; apertura sub- 

 Iriangularis , intusnitida, livida; perist. castaneum, marginibus 

 callo castaneo introrsum diffuso junctis, supero subexpanso, ba- 

 sali reflexo, cum columellari brevi, obliquo angulum obtusum 

 formanle. — Diara, raaj. 37, niin. 30, alt. iiV^ mill. (Spec. unic. 

 Mus. Brit.) 



Helix fidgurala Soiv. m Malac. and Conch. mag. I. j). 47. c. tab. 

 — — Pfr. Symb. III. p. 79. 



Lucerna fulgurata Stcains. Malac. p. 329. 

 Habitat . . . ? 



