25 



Helix (Nanina) irradiata. T. conico-globosa, tenuis, im- 

 perforata, albida, supra purpureo radiatim tessellata, lineis incre- 

 ment! acutis confertim striata, subtus rotundata : spira anfr. 6 

 convexis, ultimo sub-angulato : apertura transversa, lunata ; labro 

 acuto, ad columellam incurvato, vix reflexo. Lat. £, alt. f poll. 

 Hab. New Holland. 



A singularly -colored Helix, in shape more like H. Cubensis 

 than any other which I recollect. The colors are arranged some- 

 what like those on Bulimus vcxillum. 



Helix (nanina) rijbricata. Testa globoso-conica, solida, vix 

 perforata, supra nitida, rufo-castanea, striis radiantibus gregatim 

 dispositis et striis volventibus decussata, infra glaberrima, livido- 

 castanea, ad centrum declivis : spira anfr. 6 convexis, amplis; 

 sutura submarginata : apertura semilunaris ; fauce livida ; 

 labro simplici, ad columellam reflexo, albo. Lat. 1, alt. f poll. 

 Hab. Lebouka, Feejee Islands. 



In shape and size like H. zalela and H. irregularis ; but in all 

 other respects it is like H. velutina, Sowb., to which it is very 

 closely allied. Perhaps it is H. Nouleti, Le Guillou. 



Helix lurida. Testa globoso-conica, depressa, glaberrima, 

 nitida, livido-castanea, infra pallescens, ad umbilicum minutum 

 declivis : spira anfr. 6 convexis, radiatim et obtuse striatis, ultimo 

 prope aperturam subangulato ; sutura impressa, marginata : aper- 

 tura lunata, fauce livida ; labro acuto, ad umbilicum reflexo, albo. 

 Lat. 1, alt. jr poll. Hab. Feejee Islands. 



Groups with the preceding species to which it is very similar, 

 but differs essentially in the want of revolving stri.se, its carinated 

 periphery, and light-colored umbilical region. It probably be- 

 longs to Nanina. 



Helix calva. Testa tenuis, depresso-globosa, nitida, pallide 

 stramineo-virescens, arete umbilicata : spira anfr. 5 haud turgidis, 

 striis incrementi obsoletis ; sutura haud impressa, marginata: 

 apertura semilunaris ; labro simplici, acuto, ad umbilicum paulum 

 reflexo. Lat. f, alt. 4- poll. Hab. Feejee Islands. 



Similar to the preceding, but smaller and lighter-colored, and 

 is plainly distinguished by its smooth, shining, rounded spire, 

 similar to the summit of H. Moricandi or H. lychnuchus. This 

 must also be a Nanina. 

 4 



