HELIX i5. bi. 24;? 



spira conica, apice pallida; anfr. 6 vix convexiuscuii, ultimus 

 spira brevior, basi inllatus, fortius striatus; columella verlicalis, 

 brevis, subtorta; apertura late lunaris, intus margarilacea; perist. 

 nigricans, late expansuni, margine basali incrassato, reflexo, cum 

 columellari valde dilatato , albido angulum obtusum formante. • — 

 R. a. = H : 18. — Diam. maj. 68, min. 60, alt. 58 mill. (Mus. 

 Cuming.) 



Helix grandis Pfr. in Proc. Zool. Soc. 1845. p. 43. 

 Habitat prope Bangui prov. Iloconensis insulae Luzon (Cuming). 



039. H. Studcriana Ferussac. 



T. imperforata, subglobosa, tenuis, saturate brunnea vel 

 olivaceo-fusca, oblique striata et transversim minutissime rugu- 

 losa; spira semiglobosa; anfr. 6, summi planulati, eleganter gra- 

 nulati, ultimus inflatus, obsolete angulatus vel sulco impresso ad 

 peripheriam notatus; apertura rotundalo-lunaris, intus margari- 

 tacea; columella recte descendens, callosa; perist. reflexum, intus 

 album. — Diam. maj. 62, min. 52, alt. 44 mill. (Coll. Nr. 376.) 



Helix Studeriana (Helicostyla) Fer. pr. 316. Hist. t. 103. f. 6. 



— — Pfr. Symb. L p. 36. 



— — Chemn. ed. U. Helix N. 251. t. 41. f. 1. 2. 

 Stylodon Studeriana Beck itid. p. 46. 



Habitat in insulis Seycheflis: Praslin. (Dufo p. 200.) 



Obs. Huic proxime affines sunt H. unidentala Chemn. (Nr. 787.) et oe- 

 poides Lea (Nr 786.). 



640. H. turbinoides Broderip. 



T. iraperforata, conico-globosa, lineis incrementi oblique 

 striata, viridis, fasciis albis, hydrophanis cingulata, apice saturate 

 fulvo-rubens ; spira obtuse conica; anfr. 5 tumidi, ultimus spiram 

 subaequans; columella arcuata, puipureo-fusca ; apertura lunato- 

 subovalis, fere circularis, intus nitidissime lactea; perist. simplex, 

 reflexum, brunneo-marginatum. — R. a. = 3 : 5. — Diara. raaj. 

 70, min. 55, alt. 50 mill. (Goll. Nr. 377.) 



Helix titrbinoides Brod. in Proc. Zool. Soc. 1840. p. 23. 



— — Pfr. Syrab. H. p. 40. 



— — Beeve Conch. syst. IL t. 166. f. 21. 22. 



— — Chemn. ed. IL Helix N. 248. t. 39. f. 1. 2. 

 Chromocochlea twbinoides Hartm. Gast. I. p. 137. t. 41. 



Habitat in insula Luzon (Cuming). 



Obs. Species inter omnes fere elegantissima. Variat testa tota \-iridi et 

 ochraceo-brunnea , laeniis nigris et viridibus ornata 



16* 



