416 ON THE LAND SHELLS OF THE MALAY ARCHIPELAGO. [ Apr. 25, 
acutiuscula ; sutura marginata ; anfr. 6, convexiusculi, sensim 
accrescentes, ultimus non descendens, infra medium acute cari- 
natus, basi parum convexus ; apertura diagonalis, subrhombeo- 
lunaris ; perist. album, breviter expansum, margine supero 
acuto, basali arcuato, reflexo, perforationem tegente. 
Diam. maj. 20, min. 16, alt. 17 mill. 
Hab. New Guinea (Coll. Saunders). 
LerropomMa scALARE, H. Adams. (PI. XXI. figs. 9, 10.) 
T. perforata, globoso-conica, solidula, spiraliter confertissime 
striata et lirts 6 filiformibus cincta, carnea, ad peripheriam 
pallidior ; spira conica, acuta ; anfr. 5, convext, ultimus inflatus, 
plicis transversis, ad peripheriam fortioribus, munitus ; aper- 
tura obliqua, subcircularis ; perist. albidum, subinterruptum, 
marginibus callo junctis. 
Diam. maj. 11, min. 9, alt. 93 mill. 
Hab. Waigiou (Coll. Saunders). 
Purina pretrrer!, H. Adams. (Pl. XXI. figs. 11, 12.) 
T. ovata, tenuiscula, levigata, subpellucida, corneo-fulva ; spira 
obtuse conica ; anfr. 5, summi convexiusculi, sequentes planiores, 
ultimus spiram superans, antice non descendens ; sutura sim- 
plex; apertura subverticalis, circularis ; paries aperturalis 
lamella arcuata, tenui, margine dextro soluta munitus ; colu- 
mella dissecta, processum linguiformem triangularem exhibens ; 
perist. incrassatum, breviter expansum, margine dextro subsi- 
nuato. 
Long. 9, diam. 5 mill. 
Hab. Batchian (Coll. Saunders). 
TRUNCATELLA (TAHEITIA) WALLACEI, H. Adams. (Pl. XXI. 
figs. 13, 14.) 
T. elongata, subulata, tenuis, decollata, albida, clathris acutis 
undulatis confertissime instructa ; anfr. superst. 8, convexius- 
culi, ultimus penultimo late sejunctus; apertura rotundato- 
lunaris ; perist. continuum, subincrassatum, undique reflexius- 
culum, extrorsum expansum. 
Long. 18, lat. 4 mill. ; ap. diam. 3 mill. 
Hab. Waigiou (Coll. Saunders). 
DESCRIPTION OF PLATE XXI. 
Fig. 1. Helix (Geotrochus) blanfordi. 
Figs. 2, 3. Heliw (Planispira) aspasia. 
Figs. 4, 5. Helia (Geotrochus) turris. 
Figs. 6, 7. Helix (Geotrochus) waigiouensis. 
Fig. 8. Helia (Dorcasia) compta. 
Figs. 9, 10. Leptopoma scalare. 
Figs. 11, 12. Pupina pfeifferi. 
Figs. 13, 14. Truncatella (Taheitia) wallacei. 
