VITRINA §. 3. 499 



IS. V. bicolor Beck. 



T. subglobosa, tenuis, sublaevigala, nitidissima, carnco- 

 albida; spira brcvis, convexa, oblusa; sutura impressa; anfr. 3 '/2 

 rapide accrescentes, ultimus inflatus, antice hyalinus, basi angu- 

 stiusculus, membranaceo-marginatus; apertura vixobliqua,Iunato- 

 rotundala ; perist. tenuissimum, margine dcxtro regulariter rotun- 

 datO; columellari rccedente, perarcuato. — Diam. maj. 18, min. 

 14, alt. 10 mill. (Mus. Cuming.) 

 Vitrina bicolor Beck mss. 



— — Pfr. in Proc. Zool. Soc. 1848. 

 llabitat in insula Guimaras Philippinarum (Cuming). 



Obs. Corpus animalis album, apice nigrum (Cuming). 



19. V. gnimarasensis Pft*. 



T. depresso - semiglobosa , tenuis, striatula, subdiaphana, 

 virenti-carnea ; spira parvula, parum elevata; sutura marginata; 

 anfr. vix 4 subplani, rapidissime accrescentes , ullimus inflalus, 

 subdepressus; apertura obliqua , lunato-subcircularis, aeque alla 

 ac lata, intus submargarilacea; perist. tenuissimum, margino 

 dextro regularitcr arcuato , columellari recedentc, perarcualo. — 

 Diam. maj. 15, min. 11 '/2, alt. 8 mill. (Mus. Cuming.) 



Vitrina guimarasensis Pfr. in Proc Zool. Soc. 18 48. 

 Habitat in insula Guimaras Philippinarum (Cuming), 



20. V. Beckiana Pfr. 



T. depresso-globosa , circuitu ovalis, tenuissima, strialula, 

 pellucida, nitida, pallidissime rubcllo-cornca; spira mcdiocris, 

 brevis, obtusa; anfr. fere 4 vix convexiusculi, celeriter accrescen- 

 tes, ultimus subdepressus , basi latus; apcrtura parum oi)Iiqua, 

 lunato-rotundata, latior quamalta; perist. simplex, marginibus 

 remolis, supero rcgulariter arcuato, columcllari superne rcflexius- 

 culo, basi reccdente, pcrarcuato. — Diam. maj. 16, min. 13, alt. 

 8 mill. (Mus. Cuming.) 



Vitrina Beckiana Pfr. in Proc. Zool. Soc. 1848. 



— peraffims Beck in sched. 



Habitat in insulis Philippinis: Negros, Siquijor, Guimaras (Cnming). 



Obs. Variat magniludine. A praeccdente praocipuo tlKTorl anfraclibus 

 niinus rapide accrescentibus et aperturae forma. 



21. V. politissima Beck. 



T. globoso-dcpressa, solidula, lacvigata, polilissima, dia- 

 phana, cornea, saturatius radiala; spira mediocris, convexa; su- 

 tura inipressa, submarginala; anfr. 4 convexiusculi, celeriter 

 accrescentes, ultimus depresso-rotundatus, basilatus; apertura 



32* 



