— 99 — 



culi, ultimus aotice non descenJens, subtus valde 



inflatus; apertura subverticalis , oblique late lunaris; 



peristoma rectum, acutum, margiue columellari ad 



umbilicum triangulariter reflexo. 

 Diam. maj. 17,5, min. 15,5, alt. 10 mm. 

 Hab. in cacumine insulae Lan-tou prope Hongkong. 



2. Microcystis Schmackeriana n. sp. 



T. perforata, depresso-globosa, subtilissime curvato-stria- 

 tula nee non lineis spiralibus subtilissimis decussata, 

 nitida, pellucida, fulvescenti-cornea; anfractus 4*/2 

 regulariter accrescentes, ultimus subtus valde inflatus, 

 non descendens; apertura sat obliqua, rotundato-lunaris; 

 peristoma rectum, margine columellari ad perforatiouem 

 reflexo. 



Diam. maj. 6^31 ^t^^^^- 6» ^It. 4 mm. 



Hab. in insula Hongkong, leg. cl. B. Schmacker; in mon- 

 tibus Lo-fou-shan ipse legi. 



3. Microcystis sculpta n. sp. 



T. depresse globosa, anguste perforata, pellucida, corneo- 

 flavescens, superne subtiliter costulato- striata, infra 

 peripheriam subtilissime striatula ; anfractus 4^/2 con- 

 vexiusculi, ultimus ad peripheriam obtuse angulatus; 

 apertura obliqua, rotundato-lunaris; peristoma rectum, 

 margine columellari tenuissime reflexo. 



Diam. maj. 2^/^, alt. 1^/^ mm. 



Hab. ad vicum Tung-dsbou prope Macao, leg, cl. R. 

 Hungerford. 



4. Microcystis glaberrima n. sp. 



T. depresse globosa, anguste perforata, sub lente sub- 

 tilissime striatula, valde nitida, pellucida, pallide fulva; 

 anfractus 5 convexiusculi , ultimus non descendens; 



7* 



