1862. | DR. L. PFEIFFER ON NEW LAND SHELLS. 271 
notata ; spira convexo-conoidea, vertice acute mammillato ; 
anfr. 5%, convexiusculi, ultimus peripheria obsolete subangulatus, 
basi planiusculus, fuscus ; columella obliqua, compressa, basi 
truncata; apertura perobliqua, subtrapezoidea ; perist. album, 
margine supero expanso, ad dextram effuso, basali reflewo, co- 
lumellari dilatato, supra rimam umbilicalem adnato. 
Diam. maj. 283, min. 22, alt. 22 mill. 
Hab. Island of Mysol (Wallace). 
11. Hexrx aurora, Pfr. (1675 a). TT. umbilicata, turbinato- 
depressa, solidula, irregulariter striatula, parum nitens, uni- 
color fusca; spira breviter conoidea, vertice minuto, acutius- 
culo; anfr. 45, convexiusculi, regulariter accrescentes, ultimus 
peripheria carinatus, antice viv descendens, subtus parum con- 
vexus ; apertura obliqua, lata, depresse lunaris, intus roseo- 
margaritacea ; perist. pallide roseum vel lilaceo-carneum, mar- 
ginibus convergentibus, supero horizontaliter abeunte, expanso, 
ad dextram subeffuso, basali vir arcuato, reflexo, columellari 
lamina fornicata dilatata umbilicum angustum fere occultante. 
Diam. maj. 30, min. 24, alt. 17 mill. 
Hab. Isle of Waigiou (Wallace). 
12, Hetrx periciosa, Pfr. (1676 a). (Pl. XXXVI. fig. 3.) 
T’. umbilicata, depresse turbinato-globosa, tenuiuscula, subdi- 
stanter plicatulo-striata, parum nitens, isabellina, lineis rufis 
eleganter circumdata ; spira conoidea, acutiuscula ; anfr. Sere 
6, convexiusculi, ultimus non descendens, supra medium Jiloso- 
angulatus et fascia latiore rufa cinctus, basi conveaus ; umbi- 
licus angustus, pervius; apertura fere verticalis, rotundato- 
lunaris ; perist. pallide roseum, expansum, marginibus vix con- 
vergentibus, dextro medio subangulatim producto, columellari 
dilatato, fornicato. 
Diam. maj. 26, min. 23, alt. 15} mill. 
Hab. Lao Mountains, Camboja (Mouhot). 
13. Hetix exacra, Pfr. (1879 4). T. umbilicata, depressa, 
solida, subrugoso-striata, fulva; spira plana, medio subim- 
mersa; anfr. 54, vit convexiusculi, lente accrescentes, ultimus 
antice descendens, peripheria rotundatus, basi circa umbilicum 
angustum pervium subinflatus ; apertura parum obliqua, an- 
guste lunaris ; perist. breviter expansum et incrassatum, mar- 
ginibus remotis, dextro ab insertione breviter ascendente, colu- 
mellari vie dilatato. 
Diam. maj. 30, min. 264, alt. 14 mill. 
Hab. North of New Guinea (Wallace). 
14, Hewrx moxuisera, Pfr. (1885 a). T.umbilicata, depressa, 
planorboidea, tenuiuscula, alba, lineis rufis variis cincta et epi- 
dermide fulva setis brevibus erectis mollibus dense obsita 
vestita ; spira plana, medio immersa ; anfr. 53, conveviusculi, 
ultimus permagnus, depresso-rotundatus, antice deflexus, subtus 
