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the columella, which, with the greater convexity beneath, and 

 the rapid enlargement of the last whorl near the aperture, are 

 sufficiently distinctive characters. It seems to be nearly like H. 

 Columbiana, Lea, a shell with which I am not acquainted. 



Helix loricata. Testa parva, depressa, flavo-viridis, arete 

 umbilicata, squamulis crescentiformibus undique loricata, subtus 

 convexa : spira anfr. 5^- convexiusculis, arete volutis, ultimo su- 

 perne ad peripheriam subangulato : apertura contracta, lunata, 

 trilobata, dente laterali, dente basali, et dente columellari lamelli- 

 formi ringens ; peristomate albo, reflexo, callo copioso conjuncto. 

 Lat. ^, alt. r 3 y poll. Hab. California. 



Form much like H. inflecta, but smaller, and teeth less devel- 

 oped. Its peculiar surface, resembling a scaly coat of mail, is 

 highly characteristic. 



Helix devia. Testa orbiculato-depressa, oblique striata, 

 dilute viridi-cornea, umbilico modico canaliculato perforata : spira 

 anfr. 6 convexis, ultimo ad peripheriam rotundato : apertura 

 transversa, oblique lunata, ad anfractum penultimum uniclentata, 

 dente trigono ; labro albo, late reflexo, ad basim horizontali, urn- 

 bilicum aliquanto ambiente. Lat. ^, alt. ^ poll. Hab. Ore- 

 gon. ? 



Much like H. pedeslris, but more solid, and lacks the pecu- 

 liar wrinkling of the epidermis. The lip is more broadly re- 

 flected, and the aperture toothed. Placed by the side of the 

 southern variety of H. palliata, somewhat blanched, it would 

 hardly be distinguished except by the umbilicus. 



Helix gulosa. Testa globulosa, crassa, rudis, sub-perfo- 

 rata, obsolete carinata, pallide castanea, colore saturatiori nu- 

 bilata, et interdum fasciata : spira anfr. 6 rotundatis, striatis ; 

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

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

 albido, prope columellam latiore, umbilicum rimatum tegente. 

 Lat. 1 T L-, alt. |, apert. f poll. Hab. New South Wales. 



Remarkable for the great altitude of its outer whorl and its 

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

 bris in texture, and H. baclia in color.. % 



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

 da, lincolis obliquis fulminantibus fuscis picta, et laminis acutis 

 3 



