— 62 — 



centes, inferi anguste infra suturam planati, ultimus altitu- 

 dinis ^/3 occupans, circa rimani subcompressus, anlice haud 

 descendens. Apertura leviter obliqua basi recedens, ovaUi, 

 supra acuta, coerulescenti-albida, anguste nigro marginata; 

 peristoma tenue acutum, marginibus callonigrolimbatojunctis, 

 margine columellari oblique intuenti tantum dilatato. 



Alt. 27, diam. 23, alt. apert. obl. 17 mm. 



Siam. 

 13. Vivipara rivularis n. (cfr. M. Ch. t. 44, fig. 1—4.) 



Testa vix rimata, elongate ovata, solida, crassa, vix 

 nitens, ruditer et irregulariter striatula, vestigiis sculpturae 

 spiralis sub lente quoque vix conspicuis, fuscescenti-viridis, 

 unicolor. Spira sat elate conica subgradata, apice parvo 

 plerumque eroso ; sutura impressa. Änfractus 5 regulariter 

 accrescentes, 3 inferi infra suturam anguste planati, dein 

 convexi, ultimus postice dimidiam altitudinem vix superans, 

 plus minusve distincte angulatus, antice haud descendens. 

 Apertura sat obliqua, ovato-piriformis, supra acuminata et 

 subcanaliculata, intus sordide albida; peristoma rectum, 

 Simplex, haud limbatum, marginibus callo continuis, externo 

 parum convexo, columellari incrassato, arcuato. 



Alt. 28, diam. max. 22, alt. apert. 16 mm. 



Hunan. 

 14. Vivipara hortulana n. (cfr. M. Ch. t. 54, fig. 9, 10.) 



T. late et aperte perforata, ovato-conica, subturrita, 

 solidula, oblique confertim striatula et obsoletissime liratula, 

 sordide olivacea. Spira turrita, apice breviter conica, in 

 speciminibus adultis decollato-erosa ; sutura subcanaliculata. 

 Anfr. superst. 3 supra brevissime angulato - humerosi, 

 dein planiusculi, ultimus ad peripheriam initio angulatus, 

 angulo aperturam versus evanescente, distinctius spiraliter 

 iiratus, infra peripheriam planiusculus, circa umbilicum ite- 

 rum angulatus, ad aperturam subascendens. Apertura clon- 

 gato-ovata, supra angulata, faucibus iivide coerulescentibus^ 



