descendens , acute carinatus, subtus convexior; umbilicus 

 latiusculus; apertura fere diagonalis, securiformis ; perist. 

 Simplex, marginibus vix convergentibus, basali arcuato, ad 

 insertionem non dilatato. — Diam. maj. 18, min. IßVa» 

 alt. 8 mill. (Mus. Cuming.) 



Similis //. Namgatorum , anfractuum ratione , apertura 

 parvula etc. discrepans, 



3. Helix Granu Pfr. (1633 b.) 



T. umbilicata, turbinata, carinata, tenuiuscula, striatula, 

 sub lente fortiore minutissime decussatula, parum nitens, 

 fusco-cornea ; spira subregulariter conica, vertice subtili; 

 anfr. 61/2 convexiusculi, ultimus infra carinara acutam, mar- 

 ginem fere attingentem convexior, in umbilicum mediocrem 

 subito ascendens, antice vix descendens; apertura diago- 

 nalis, rotundato-lunaris; perist. tenue, marginibus conver- 

 gentibus, supero breviter expanso, basali arcuato, reflexo, 

 columellari dilatato, patente. — Diam. maj. 15, min. 13, 

 alt. 8 mill. (Mus. Cuming.) 



4. Helix Swinhoei Pfr. (§. 108 a. nr. 1660 a.) 



T. mediocriter umbilicata, turbinato-depressa, solidula, 

 oblique ruguloso-striata, striisque spiralibus confertissimis 

 subtiliter sculpta, unde subsericea, fulvo-fusca, submarmo- 

 rata; spira breviter turbinata, obtusula; anfr. 5 — b^/^, superi 

 planiusculi, ultimus vix descendens, superne subtumidus, 

 medio carina prominente obtusa cinctus, subtus inflatus; 

 apertura diagonalis, rotundato-lunaris, intus coerulescenti- 

 margaritacea ; perist. carneo-fuscum, marginibus convergen- 

 tibus, callo tenui junctis, supero anguste expanso, basali 

 reflexiusculo, versus insertionem sensim dilatato. — Diam. 

 maj. 52— 58, min. 43-48, alt. 27— 28 mill. (Mus. Cuming. 

 et Coli. Nr. 1328.) 



ß. Minor, fulva, peristomate pallide roseo, apertura 

 intus alba; diam. maj. 46, min. 39, alt. 25 mill. 

 5. Helix Formosensis Pfr. (1669 b.) 



T. sinistralis, umbilicata, subturbinato-depressa, tenuius- 



