HELIX §. 5i. 
•24:3 
spira conica, apice pallida; anfr. 6 vix convexiusculi, ultimus 
spira brevior, basi inflatus, fortius striatus; columella verticalis, 
brevis, subtorta; apertura late lunaris, intus margaritacea; perist. 
nigricans, late expansum, margine basali incrassato, reflexo, cum 
columellari valde dilatato, albido angulum obtusum formante. — 
U. a. = M : 18. — Diam. maj. (38, niin. 60, ait. 58 mi!L (Musf 
Cuming.) 
Helix grandis Pfr. ia Proc. Zool. Soc. 1845. p. 43. 
Habitat prope Bangui prov. Iloconensis insulae Luzon (Cuming). 
^ 639. H. Studeriana Ferussac. 
T. imperforata, subglobosa, tenuis, saturate brunnea vel 
olivaceo- fusca, oblique striata et transversim minutissime rugu- 
losa; spira semiglobosa; anfr. 6, summi planulaii, eleganter gra- 
nulati , ultimus inflatus , obsolete angulatus vel sulco impresso ad 
peripheriam notatus; apertura rotundato -lunaris, intus margari- 
tacea; columella recte descendens, callosa; perist. reflexum, intus 
album. — Diam. maj. 62, min. 52, ait. 44 rnill. (Coli. Nr. 376.) 
Helix Studeriana (Helicostyla) Fer. pr. 316. Ilist. t. 103. f. 6. 
— — • Pfr, Symb. I. p. 36. 
— — Chemn. ed. II. Helix N. 251. t. 41. f. 1. 2. 
Siylodon Studeriana Beck ind. p. 46. 
Habitat in insulis Seychellis; Praslin. (Dufo p. 200.) 
Obs. Huic proxime affines sunt II. iinidentata Chemn. (Nr. 787.) et ce- 
poides Lea (Nr. 786.). 
640. H. turbinoides Broderip. 
T. imperforata, conico -globosa, lineis incrementi oblique 
striata, viridis, fasciis albis, hydrophanis cingulata, apice saturate 
fulvo-rubens ; spira obtuse conica; anfr. 5 tumidi, tiltimus spiram 
subaequans; columella arcuata, purpureo-fusca ; apertura lunato- 
subovalis , fere circularis, intus nitidissime lactea ; perist. simplex, 
reflexura, brunneo- marginatum. — R. a. = 3 : 5. — Diam. maj. 
70, min. 55, ait. 50 mill. (Coli. Nr. 377.) 
ihlix turbinoides Brod. in Proc. Zool. Soc. 1840. p. 23. 
— — Pfr, Symb. II. p. 40. 
— — Beeve Couch. syst. H. t. 166. f. 21. 22. 
— — Chemn, ed. H. Helix N. 248. t. 39. f. '1. 2. 
Chromocochlea turbinoides Hartm, Gast. I. p. 137. t. 41. 
Habitat in insula Luzon (Cuining). 
Obs. Species inter omnes fere elegantissima. Variat testa tota viridi et 
ochraceo-briinnea , taeniis nigris et viridibii.s ornata. 
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