HELIX §. 80. 197 



Acavus melanotragus c Beck Ind. p. 37. 

 — — H. et A. Adanis Gen. II. p. 195. 



8. Tesla solidiore, obsolele spiraliter sulcata et basi subangulata, 

 statura et coloribus ut in fornia typica. 



Habitat in insula Ceylon. (Conf. Betis. in Ann. and Mag. 2d ser. 

 VII. p. 265.) 



1236. H. prospera Albers. 



T. imperforata, conoideo-globosa, soiida, distincte striata, 

 unicoior purpurascenti-castanea; spira inflato-conoidea, apice 

 rosea; anfr. 4 convexi, modice accrescentes, ultimus ventrosus, 

 antice subdescendens; apertura diagonalis, truncato-oblonga, 

 antice rotundata, intus lactea; perist. purpureum, expansum, 

 marginibus callo purpureo junctis, dextro medio inflexiusculo, 

 superne arcuato , columellari stricto , dilatato , vix excavato, 

 sensim in basalem transeunte. — Diam. maj. 44, min. 34, alt. 

 25 mill. (Coll. Albers.) 



Helix prospera Albers in Malak. Bl. IV. 1857. p. 93. t. 1. f. 7. 8. 

 Habitat in insula Ceylon. 



Obs. Differt ab omnibus affinibus forma subglobosa, spira inflafa, 

 aperturae forma, etc. 



1237. H. fastosa Albers. 



T. imperforata, globoso-conica, regulariter confertim striata, 

 albida, oblique fulvo-strigata et multifasciata; spira conica, ob- 

 tusula; anfr. 4^^ convexiusculi, rapide accrescentes, ultimus 

 antice descendens, peripheria obsoletissime subangulatus; aper- 

 tura diagonalis, oblique oblonga, intus alba; perist. hepaticum, 

 marginibus callo nigro-castaneo, nitido, intrante junctis, supero 

 leviter arcuato , expanso et reflexiusculo , columellari declivi, 

 plano, perdilatato, adnalo. — Diam. maj. 38. min. 30, alt. 27 

 mill. (Coll. Nr. 624.) 



Helix fastosa Albers in Maiak. Bl. I. 1854. p. 213. 



— — (Acavus) Pfr. Vers. p. 14 4. 



— — Pfr. Novit. coach. I. p. 40. n. 69. l. 11. f. 1. 2. 



— haemastoma var. Fdr. Hist. t. 32 B. f. 2? 



p. Alba, peristomate pallidissime roseo, marginibus calio purpureo 

 junctis. 

 Habitat in insula Geylon. 



1238. antiqua Ad, et Reeve. {Rv. n. 4oa. t. 77. — 

 Ch. ed. nov. III. p. 400. — Acavus Pfr. Vers. 

 p. 144. — Acavus anliquattis [Geotrochus] Ad. 

 Gen. p. 196.) Mon. III. p. 1 72. 



