— 14 — 
Habitat. In insula Hai-nan prope oppidum Hoihon 
leg. cl. Dr. Gerlach. 
11. Microcystis Schmackeriana Mlldff. 
Testa perforata depressoglobosa, subtilissime curvato stria- 
tula nec non lineis spiralibus subtilissimis decussata, 
fulvescenticornea; anfr, 41), regulariter accrescentes, 
ultimus subtus valde inflatus non descendens. Aper- 
tura sat obliqua rotundatolunaris, peristoma rectum 
margine columellari ad perforationem reflexo. 
Diam. maj. 6"), min. 6 alt. 4 mm. 
Hab. in insula Hongkong (Schmacker), in montibus Lo- 
foushan (ipse). 
12, Plectopylis cutisculpta Mlldff. 
Testa perspective umbilicata conoideo-depressa, tenuis, 
subpelluceida, cornea, angulata, superne transverse ru- 
gosostriata et lineis spiralibus decussata, subtus striata, 
nec non costulis euticulae sat distantibus valde deci- 
duis ad peripheriam in lacinias prolongatis ornata; 
anfr. 7 lente crescentes, ultimus haud dilatatus, non 
descendens; apertura diagonalis, sat parva, lunaris, 
peristoma breviter expansum et reflexum inerassatum, 
marginibus callo junctis. Palatum intus lamellis quin- 
que brevibus parallelis munitum, una valida lunata in 
pariete transverse opposita. 
Diam. maj. 7, min. 6 alt. 31), mm. 
13. Helix (Fruticoconus) trochulus Mlldff. 
Testa anguste umbilicata, trochiformis, filoeincte carinata, 
curvatim oblique striatula, irregulariter pilosa, corneo- 
fusca, spira conica, apice acutiusculo; anfr. 6), con- 
vexiusculi, ultimus ad aperturam paullum descendens, | 
basi subinflatus, apertura diagonalis, semielliptica, | 
