Orbiculata 



Index to the Nautilus 



Orientalis 



orbiculata, Semele 4: 4, 5: 70, 14: 105 

 orbiculatus, Lampsilis 20: 52 

 orbiculatus, Unio 1: 50, 8: 116, 18: 57 

 Orbiculoidea humilis 28: 94 

 orbiculus, Planorbis 33: 78, 34: 38 

 orbignyanum, Chlorostoma 13: 111 

 orbignyi, Acmaea 23: 131 

 orbignyi, Area 6: 110 

 orbignyi, Pisania 12: 52 

 orbignyi, Potamolithus 10: 80, 10: 88, 



12: 113 

 orbignyi, Scala 6:111 

 orbignyi, Tritonidea 22: 131 

 Orbis, rotella 4: 25 

 Orcula, 17: 116 

 orcutti, Anisospira 24: 34 

 orcutti, Chlamydoconcha 11: 91 

 orcutti, Eucalodium 24: 34 

 orcutti, Fusinus 29: 57 

 orcutti, Macrocallista 32: 24 

 orcutti, Macron 31: 127 

 orcutti, Mitra 33: 103 

 orcutti, Sonorella 18: 95 

 orcuttii, Caecum 16: 41, 22: 135, 33: 63 

 oregona, Acmaea 28: 14 

 oregona, Chrysallida 21: 42 

 oregona, Odostomia 21: 42 

 oregonense, Argobuccinum 24 : 30 

 oregonense, Triton 24: 30 

 oregonense, Tritonium 12: 111-12 

 oregonensis, Ancylus 9: 137, 13: 65, 



17: 14 



oregonensis, Anodonta 5: 55, 6: 135, 



9: 102, 12: 111, 28: 43 

 oregonensis, Argobuccinum 24: 29, 31: 



98 



oregonensis, Catenoscala 22: 80 

 oregonensis, Epiphragmophora 26: 49 

 oregonensis, Helix 26: 49-50 

 oregonensis, Planorbis 9: 52-4, 13: 48, 

 19: 94 



oregonensis, Polygyra 11 : 93 

 oregonensis, Priene 7: 71-2, 9: 39, 10: 



33, 11: 66, 18: 69, 21: 43, 24: 29-30, 



33:24 



oregonensis, Succinea 3 : 78, 5 : 56, 5 : 92, 

 7: 44, 9: 102, 11: 144, 13: 4, 14: 125, 

 23: 76, 29: 125, 29: 144, 31: 34 

 oregonensis, Unio 8: 116-17 

 oreta, Helix 10: 104 

 oreta, Xerophila 10: 104 

 Oreohelix, 19: 69 



albofasciata 25: 137 



alpina 26: 89, 29: 48 



alta 26: 144 



avalonensis 19: 71 



barbata 19: 71, 28: 110-12, 29: 30 



Oreohelix berryi 29: 48, 29: 127 

 betheli 26: 144, 27: 39 

 carinifera 26 : 89 



chiricahuana 19 : 7 1 , 27 : 5 1 , 30 : 101 



clappi 18: 53, 19: 71 



clutei 34: 5 



compactula 19: 46 



concentrata 25: 19, 26: 39 



cooperi 25: 133, 25: 137-8, 26: 9, 

 27: 105-6, 27: 38, 27: 52, 29: 

 81, 29: 91, 30: 101, 32: 40, 32: 

 43, 32: 84, 34: 12 



corrugata 30: 96 



cumingsi 34: 5 



dakani 27: 38 



depressa 25: 18-19, 25: 133, 25: 



136, 26: 29-30, 26: 41, 27: 111, 



30: 101, 32: 41, 34: 6 

 elrodi 26: 30 

 eurekensis 30: 96, 31: 94 

 extremitatis 27: 50, 32: 41, 32: 44 

 gabbiana 25: 133, 26: 11, 26: 30, 



27: 38 

 handi, 31: 33, 31: 94 

 haydeni 25: 133, 26: 11, 26: 89, 



26: 144 



hemphilli 19: 71, 26: 89, 27: 51, 



31:33,31:94 

 hendersoni 26: 11, 26: 29, 27: 38 

 huachucana 19 : 7 1 , 25 : 19, 33 : 43 

 idahoensis 27 : 54 

 iowensis 27: 134 

 magnicornu 29: 141 

 maxima 32: 41 



metcalfei 18: 113, 19: 71, 30: 101 

 minor 26: 10, 27: 38, 27: 53, 29: 



48, 32: 40 

 neomexicana 19: 71, 34: 5-6 

 obscura 32: 46 

 obsoleta 33: 70 

 oquirrhensis 34: 141 

 peripherica 27: 53, 30: 96 

 pilsbryi 30: 102 



pygmaea 27: 37, 27: 52, 32: 41 

 socorroensis 19 : 7 1 

 stantoni 19: 95 



striogsa 18: 54, 19: 47, 20: 132, 

 21: 24, 26: 81, 29: 112, 32: 41, 

 34: 141 



tenuistriata 30: 96 



toolensis 30 : 96 



utahensis 29: 139 



yavapai 19 : 7 1 , 25 : 18, 26 : 30, 27: 

 51 



orientalis, Amastra 25: 16 

 orientalis, Lima 7: 75, 9: 71, 16: 43, 

 18: 19, 21: 86 



308 



