1543 
1544 
1505 
1634 
3147 
20 
Helix californiensis Lea. 
Variety Nickliniana Lea. 
Helix (Arionta) carpenterii Newcomb 
Helix (Arionta) coloradoensis 
Helix Damascenus Gould, 1856. 
3 Helix dentifera 
1939 
3144 
3149 
1531 
2108 
3145 
Helix devia Clappi. 
Helix Duranti (var Caelata Mazyck)). 
Helix facta 
Helix (Polygyrella) Harfordiana 
Helix (Patula) Hemphilli 
Helix Kellettii 
18 Helix labyrinthica 
2109 
3142 
1547 
2240 
2091 
Helix (Triodopsis) Levettei Bland. 
Helix levis 
Helix loricata Gould. 
Helix loricata sonomaensis 
Helix (Arionta) Magdalenensis 
19 Helix monodon 
3146 
Helix Newberryana 
4 Helix palliata 
3143 
1497 
Helix pandorz 
Helix ptychophorus castaneus 
22 Helix pulchella 
3148 
2 
3150 
Helix Rowellii 
Helix sayi 
Helix Stearnsiana 
16 Helix striatella 
$151 
3152 
Helix Traskii 
Helix Traskii Carpenteri 
20 Helix tridentata 
3153 
1498 
3154 
3141 
2242 
2243 
836 
1144 
1885 
837 
1882 
1883 
110 
2080 
330 
435 
189 
436 
2297 
434 
188 
1816 
838 
2208 
2210 
1815 
1818 
2953 
17138 
Helix tudiculata 
Helix tudiculata subdolus 
Helix (Vancouverensis Lea, 1839) var. Sportella 
Helix veatchii Newcomb. 
Helix walkeriana 
Variety Morroensis 
Hemicardium biangulatum Sowerby. 
Hemithyris psittacea Gmelin. 
Hemphillia camelus Pils. & Van. 
Hemphillia glandulosa W. G. Binney. 
Hesperarion niger Cooper. 
Hesparion Hemphilli 
Heterodonax bimaculatus 
Hindsia perideris 
Hinnites giganteus Gray 
Hipponyx antiquatus Linne. 
Hipponyx antiquatus L., var serratus Cpr 
Hipponyx cranioides Conrad. 
Hipponyx grayanus Menke. 
Hipponyx serratus Carpenter. 
Hipponyx tumens Cpr 
Holospira bilamellata Dall. 
Holospira arizonensis Stearns. 
Holospira cionella 
Holospira chiricahuana 
Holospira Cockerelli Dall, Nautilus 11:61. 
Holospira Crossei Dall. 
Holospira Ferrissi 
Holospira (Haplostemma) Hamiltoni 
13638 
