166 



ultimo amplissimo, et obsolete costato-carinato ; sutura profunda : 

 apertura magna, rotundata, fauce livida ; labro modice reflexo, 

 albido, prope columellam latiore, umbilicum rimatum tegente. 

 Lat. lyV^ alt. I, apart. | poll. Hab. New South Wales. 



Remarkable for the great altitude of its outer whorl and its 

 large aperture. It is like H. Californianus in form, H. albola- 

 hris in texture, and H. hadia in color. 



Helix ziczac. T. parva, rotundata, depressa, stramineo-albi- 

 da, lineolis obliquis fulminantibus fuscis picta, et laminis acutis 

 confertis reflexis pilosis lyrata : subtus convexa, umbilico magno 

 scalariformi perforata : spira anfr. 6 convexis, angustis : apertura 

 subcircularis, ad basim subangulata ; labro simplici, prope umbili- 

 cum reflexo. Lat. r%, alt. ^ poll. Hab. New Zealand. 



A very beautiful shell, unlike any other described except H. 

 dissimilis, D'Orb., which is larger, more dotted, and is not noted 

 as hairy. In general form, striation, umbilicus, &c., it is like H. 

 striata. 



Helix pedesteis. Testa rudis, depresso-globosa, late perfo- 

 rata\, luteo-cornea, ad apicem virens, striis incrementalibus con- 

 spicuis inequalibus, et striis minutissimis confertis volventibus 

 decussata : spira anfr. 5i convexiusculis ; ultimo ventricoso, prope 

 aperturam deflexo : apertura obliqua, transversa, rotundato-luna- 

 ris ; peristomate reflexo, albo, ad basim dilatato, juxta columellam 

 sinuato. Lat. |, alt. i poll. Hah. New South Wales. 



It has the shape and aspect of H. zaUta.^ but is more like H. 

 profunda inferiorly. 



Instead of the usual sliding motion of the Helices, the mollusk 

 of this shell flexes its foot into about four vertical undulations, so 

 as to touch the plane of motion at as many points only ; and these 

 undulations pass from the head towards the tail, as in the motions 

 of a caterpillar or a millipede. 



Helix strigosa. Testa orbicularis, depressa, scabrata, late 

 umbilicata, cinereo-grisea vel fuscescente, fasciis linearibus vol- 

 ventibus pallide fuscis interdum subtus notata : spira anfr. 5 con- 

 vexiusculis ; ultimo angulato et prope aperturam deflexo : apertura 

 circularis; labro simplici, continuo. Lat. yj, alt. f poll. Hab, 

 Interior of Oregon. 



Of the shells of this continent, it may be compared with H. 



