135 
9. Henrx acme ua, Pfr. (Pl. L. fig. 4.) 7. subobtecte perfo- 
rata, turbinata, solidula, levigata, nitida, lutea, sursum palli- 
dior ; spira regulariter turbinata, vertice minutissimo, acuto ; 
anfr. 6 convexi, ultimus non descendens, basi planior ; aper- 
tura diagonalis, subquadrangulari-ovalis ; perist. album, re- 
flecum, margine dextro subflexuoso, columellari longe adnato, 
umbilicum canaliformem fingente. 
Diam. maj. 26, min. 22, alt. 25 mill. 
Hab. Admiralty Islands. 
10. Hexrx uiratura, Pfr. T. umbilicata, trochiformis, tenui- 
uscula, striata et liris filiformibus subconfertis cincta, diaphana, 
oleoso-micans, pallide corneo-lutescens ; spira conica, apice 
obtusa; sutura impressa; anfr. 73 convexiusculi, ultimus an- 
gulatus, non descendens, bast levior, convexior ; apertura vix 
obliqua, subangulato-lunaris ; perist. simplex, rectum, margine 
columellari declivi, jucta umbilicum perangustum subdilatato. 
Diam. maj. 6, min. 54, alt. 4 mill. 
Hab. Ceylon, 6000', under decayed woods (Mr. Thwaites). 
11. Hecrx sates, Pfr. TT. umbilicata, depressa, tenuis, dense 
et oblique plicatula, cornea, pliculis albidis ; spira convexa, 
parum elata; anfr. 5 convexiusculi, regulariter accrescentes, 
ultimus non descendens, subdepressus, basi convexior ; umbilicus 
latus, + diametri subequans ; apertura diagonalis, rotundato- 
lunaris ; perist. simplex, rectum, margine basali arcuato, ad 
insertionem vix patente. 
Diam. maj. 11, min. 93, alt. 5 mill. 
Hab. Upper Amazon (Mr. Bates). 
12. Heurx turNeERI, Pfr. T. anguste et clauso-umbilicata, de- 
pressa, subdiscoidea, tenuiuscula, conferte plicato-costata, dia- 
phana, nitidula, corneo-lutescens, rufo variegata et ad suturam 
distincte maculata; spira via elevata; sutura denticulata ; 
anfr. 4 convexiuscult, regulariter accrescentes, ultimus, subde- 
pressus, non descendens, loco umbilici lamina vitrea obtectus ; 
apertura fere diagonalis, subtriangulari-lunaris; perist.simplex, 
vectum,- marginibus distantibus, supero antrorsum arcuato, 
basali medio denticulo albo munito, ad insertionem subdilatato. 
Diam. maj. 74, min. 64, alt 3 mill. 
Hab. New Caledonia (Mr. Turner). 
13. Hexirx nacrorensis, Pfr. T. latissime umbilicata, depressa, 
tenuiuscula, oblique striata, opaca, carneo-albida ; spira medio 
via prominula ; anfr. 4 convexiusculi, ultimus subtus vix latior, 
antice deflecus et subtus subconstrictus ; apertura perobliqua, 
transverse ovalis; perist. tenue, marginibus convergentibus, 
supero recto, basali breviter reflexo. 
Diam. maj. 10, min. 8, alt. 4 mill. 
Had’. Nagpore, India (Mr. Jerdon). 
