2 
72 DR. L. PFEIFFER ON NEW LAND SHELLS. [Noyv. 25, 
circa umbilicum angustum infundibuli instar excavatus ; aper- 
tura obliqua, lunaris, intus alba, subfasciata ; perist. simplex, 
marginibus convergentibus, callo junctis, dextro ab insertione 
ascendente, regulariter arcuato, expanso, columellari flexuoso, 
anguste refiexro. 
Diam. maj. 30, min. 25, alt. 12 mill. 
Hab. Island of Mysol (Wallace). 
Nearly allied to ZZ. circumdata, Fér., from which it differs in its 
size and epidermis, in its last whorl being less deflected, the umbilicus 
narrower, and the aperture more rounded. 
15. Hetix prompnHata, Pfr. (1888 a). T'. mediocriter umbili- 
cata, depressa, solidula, striatula et lanugine brevi obtecta, 
Susca; spira profunde immersa ; anfr. fere 5, turgidi, ultimi 
rapide accrescentes, ultimus inflatus, altus, antice sensim de- 
scendens, circa umbilicum non angulatus ; apertura fere dia- 
gonalis, lunari-rotundata, intus margaritacea ; perist. tenue, 
carneum, marginibus convergentibus, dextro ab insertione ascen- 
dente, subregulariter arcuato, anguste expanso, columellurt sub- 
arcuato-declivi, anguste reflexo. 
Diam. maj. 20, min. 17, alt. 10-11 mill. 
Hab. Island of Ceram (Wallace). 
16. Hevrx raomontana, Pfr. (191la). (Pl. XXXVI. figs. 9, 
10.) ZT. umbiticata, discoidea, solida, conferte capillaceo- 
striata, fusca ; spira plana; anfr. 63, vie convewiusculi, lente 
accrescentes, ultimus peripheria rotundatus, antice subdilatatus, 
deflecus, subtus antice fortius striatus ; umbilicus latissimus, 
pateriformis ; apertura perobliqua, transverse truncato-oblonga, 
inimo fundo lamellis pluribus, per testam pellucentibus, munita ; 
perist. albidum, incrassatum et reflexiusculum, marginibus callo 
crassiusculo rectilinear junctts. 
Diam. maj. 32, min. 27, alt. 83 mill. 
B. Minor, anfr. 6, lamellis in anfr. ultimo nullis conspicuis. An 
spec. propria ? 
Diam. maj. 214, min. 18, alt. 63 mill. 
Hab. Lao Mountains, Camboja (Mouwhot). 
17. Hetix norripa, Pfr. (1912 a). (Pl. XXXVI. fig. 15.) 
T. umbilicata, depressa, tenuiuscula, granulata setisque rigidis 
erectis obsita, corneo-fusca; spira immersa ; sutura profunda ; 
anfr. 44, convexi, ultimus rotundatus, antice profunde descen- 
dens, fossa profunda ab apertura remotiuscula et 2 juxta peri- 
stoma notatus ; umbilicus latiusculus, infundibuliformis ; aper- 
tura subhorizontalis, bisinuato-pyriformis, intus dente profundo 
et ad marginem duobus validis (omnibus fossis externis respon-- 
dentibus) instructa ; perist. continuum, undique reflecum, mar- 
ginibus dextro et basali flexuosis, parietali subelevato. 
Diam. maj. 183, min. 14, alt. 74 mill. 
Hab. Lao Mountains, Camboja (Mouhot). 
