EXPLANATION OF PLATES, 
FIGURE, 
32, 
. Zonites (Stenotrema) hirsuta, Say. United States, 
. Zonites (Triodopsis) tridentata, Say. United States, . 
. Zonites (Xolotrema. palliata, Say. United States, 
. Zonites (Isognomostoma) personata, Lam. Europe, . 
. Zonites (Mesodon) albolabris, Say. United States, 
. Zonités (Ulostoma) profunda, Say. United States, 
. Zonites (Acanthinula) aculeata, Mull. Europe, . 
33. Zonites (Ammonitella) Yatesii, Cooper. California, 
42. Helix (Vallonia) pulchella, Mull, Europe, U.S., 
. Helix (Petasia) bidens, Chemn. Europe, . . 
. Helix (Hygromia) hispida, Mull. Europe, . 
. Helix (Nummulina) nummus, Ehrenb. Syria, 
. Helix (Euparypha) Pisana, Mull, So. Europe, 
. Helix (Jacosta) filimargo, Ziegl. Tauria, 
PuatTEt 95. 
. Helix ( Helicella) ericetorum, Mull. Europe, 
. Helix (Turricula) pyramidata, Drap. Europe, 
. Helix (Hystricella) bicarinata, Sowb. Madeira, . 
. Helix (Plectotropis) elegantissima, Pfr. Loochoo Is., 
. Helix (Odontura, Ghiesbreghti, Nyst. Mexico, . 
. Helix ( Lysinoé) fidelis, Gray. Oregon, California, 
. Helix (Eucampylea) Pouzolzi, Payr. Corsica, . 
. Helix (Chilotrema) lapicida, Linn. Europe, 
. Helix (Arionta) arbustorum, Linn. Europe, 
. Helix (Arionta) Californiensis, Lea. California, 
. Helix (Eurystoma) vittata, Mull. Ceylon, . 
. Helix (Eremina) desertorum, Forsk. Egypt, 
. Helix (Rhagada) reinga, Gray. New Zealand, 
. Helix (Tachea) hortensis, Mull. Europe, ; 
. Helix (Macularia) Niciensis, Fer. So. Europe, . 
. Helix (Iberus) Gualtieriana, Linn. So. Europe, . 
. Helix (Leptoloma) fuscocincta, Ads. Jamaica, . 
. Helix (Dialeuca) nemoraloides, Ads. Jamaica, . 
. Helix (Hemicycla) Saulcyi, d’Orb. Canary Is., . 
. Helix (Plebecula) punctulata, Sowb. Madeira, 
. Helix (Leptaxis) undata, Lowe. Madeira, . : 
. Helix (Lampadia) Webbiana, Lowe. Madeira, . 
. Helix (Plagioptychia) loxodon, Pfr. Hayti, 
. Helix (Erepta) stylodon, Pfr. Mauritius, . 
. Helix (Dentellaria) Josephine, Fer. Guadeloupe, 
. Helix (Geotrochus) Ferussaci, Lesson. N. Guinea, 
. Helix (Oxychona) bifasciata, Burrow. Brazil, 
. Helix (Acavus) hemastoma, Linn, Ceylon, 
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