HELIX §. 80. 197 



Acavus melanotragiis c Beck lad. p. 37. 



— — H. ei A. Adams Gen. II. p. 193. 



8. Testa solidiore, obsolete spiraliter sulcata et basi subangidata, 

 stalura et coloribus ut in forma typica. 



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

 VII. p. 265.) 



1236. H. prospera Albers. 



T. innperforata, conoideo-globosa, solida, distincte striata, 

 unicolor 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 arcualo , columellari stricto , dilatato , vix excavato, 

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

 25 mill. (CoII. Albers.) 



Helix prospera Alhers in Malak. Bi. IV. 1857. p. 93. t. I. f. 7. 8. 

 Habitat in insula Ceylon. 



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

 aperturae forma, etc. 



1237. H. fastosa Albers. 



T. imperforata, gioboso-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 Malak. Bl. I. 1854. p. 213. 



— — (Acavus) Pfr. Vers. p. 14 4. 



— — Pfr. Novit. conch. I. p. 40. n. 69. t. 11. f. 1. 2. 



— haemastoma var. F6r. Hist. t. 32 B. f. 2? 



^. Alba, peristomate pallidissime roseo, marginibus callo ])urpureo 

 junctis. 

 Habitat in insula Ceylon. 



1238. antiqua Ad. et Reeve. [Rv. n. 40-2. t. 77. — 

 Ch. ed. nov. 111. p. 400. — Acavus Pfr. Vers. 

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

 Gen. p. 196.) Mon.lll. p. 172. 



