HELIX §. 52. 253 



Helix pulcherrima /9 Pfr. Symb. 11. p. 37. 



— luzonica var. Chemn. 1. c. t. 45. f. 8. 



y. Minor: diam. maj. 31 , min. 26, alt. 23 mill. (Spec.) 

 Helix luzonica var. Chemn. 1. c. t. 45. f. 1 1. 



Habitat iii insula Luzon (Curaing). 



Obs. Differt ab H. pulcheiriraa tesla ciassa, conoidea, anfracluum lentius 

 accrescentium numero , columella vix excavala et labro incrassato. 



660. H. obtusa Pfr. 



T, imperforata , subglobosa , lenuis, striis incrementi et lineis 

 impressis concentricis obsoletis subdecussata , nitida , laete casta- 

 nea; spira subelevata, obtusa; anfr. 4 convexi, ultimus inflatus; 

 columella obliqua, acuta, alba; apertura dilatata, subauriformis, 

 intus margaritacea ; perist. simplex, expansum. — R. a. = 5 : 8 



— Diam. maj. 35, min. 29, alt. 26 milL (Mus. Cuming. ) 

 Helix obtusa Pfr. in Proc. Zool. Soc. i 845. p. 38. 



/5. Alba, minor: diam. maj. 30, min. 24, alt. 2 mill. (Mus. Cum.) 



Habitat in insula Luzon (Cuming). 



661. H. unica Pfr. 



T. imperforata, globosa, solidiuscula, obiique striatula, albida; 

 sutura profunda ; anfr. 5V2 inflati, supremi planiusculi; columelia 

 profunde intrans , arcuata , subcanaliculata ; apertura perobliqua, 

 subcircularis, intusalba; perist. late expansum , intus fulvidum, 

 marginibus approximatis, basali incrassato. — R, a. = 13:20. 



— Diam, maj. 38, min, 31 , alt, 19 mill, (Mus. Cuming.) 

 Helix unica Pfr. in Proc. Zool. Soc. 1842. p. 151. 



Habitat prope Samboanga insulae Mindanao (Cuming). 



b s. Forma accedit ad H. mammillam Fer., a qua differt testa omnino im- 

 perforata , laeviuscula etc. 



662. H. collodes Sowerby. 



T. imperforata, subsemiglobosa, tenuis, alba, epidermide 

 fusco-Iutescente, nitida induta, apice carnea; sutura distincta, 

 rufo-marginata ; anfr. 5 convexiusculi, ultimus basi subplanulatus; 

 columella brevis, obliqua, tenuis; apertura rotundato-Iunaris, 

 intus alba; perist. expansum, subincrassatum , nigricans. — R. a. 

 ==5:8, — Diam. maj. 32, min, 27 , alt. 22 mill.^lCoIl. Nr. 393.) 

 Helix collodes Sow. in Proc. Zool. Soc. 1840. p. 102. 



— — /yr. Symb. IL p. 2 5. 



— — Chemn. ed. IL Helix N. 676. t. 108. f. 7. 8. 

 Habitat in insula Tablas Philippinarum (Cuming). 



