superne striis arcuatis subclistantibus, versus aperturam con- 

 fertioribus, incisi; apertura parum obliqua, oblique lunaris, 

 Intus submargaritacea ; perist. slmplex, rectum, rnarginibus 

 vix convergentibus, supero autrorsum subdilalato, basali ad 

 insertionera vix reflexiusculo. — Diani. maj. S'^/a, min. 7i'ä, 

 alt. 3 mill 



Habitat in insula Barbados (Th. Gill teste Bland). 

 6. (421a.) Helir virescens Pfr. 



T. anguste umbilicata, turbiniformis, tenuiusciila, leviter 

 striatüla, parum nitens, viridula, sursum pKllescens; spira 

 regulariter conoidea, vertice acutiusculo; sutura impressa; 

 anfr. fere 7 convexiusculi , ultimus non descendens , basi 

 planiusculus; apertura parum obliqua, lunaris; perist. simplex, 

 rectum, rnarginibus vix convergentibus, columellari superne 

 subdilatato, reflexo. — Diam. maj. (spec. max.) IS^o» iiiin. 

 12, alt. 8 mill. 



Habitat in monte Piaton insulae Haiti (Smith). 

 7. (426 b.) Helix impura Pfr. 



T. umbilicata, trochiformis , tenuiuscula, rugoso-costu- 

 lata, sub tegumento impuro Cornea; spira regulariter tur- 

 binata, vertice obtusulo ; sutura profunda ; anfr. 5 modice 

 convexi, ultimus non descendens, subdepressus, subtus cos- 

 tulato-striatus ; umbilicus mediocris, pervius ; apertura obli- 

 qua, lunato-rotundata; perist. simplex, rectum, rnarginibus 

 approximatis, columellari subverticali , superne dilatato, 

 patente. — Diam. maj. 4, min. S^/^, alt. 3 mill. 



Habitat Mirador, Veracruz reipublicae mexicanae 

 (Berendt). 



8. (431a.) Helix Wilhelmi Pfr. 



T. umbilicata, breviter turbinata, tenuls, striatüla, oleoso- 

 micans, rufo-fusca; spira conoidea, vertice minuto; sutura 

 profunda; anfr. 4 tumidi , ultimus leres, non descendens; 

 umbilicus latiusculus, 1/3 diametri subaequans ; apertura 

 fere diagonalis, lunato-rotundata; perist. simplex, rectum, 



