RANGE OF SPECIES 
CIRCUMBOREAL SPECIES 
Admete couthouyi 
Buccinum ciliatum 
Buccinum glaciale 
Buccinum plectrum 
Buccinum tenue 
Columbella rosacea 
Colus conulus 
Cylichnella alba 
Cylichnella nucleola 
Cylichnella occulta 
Diaphana globosa 
Lora bicarinata 
Lora elegans 
Lora harpa 
Lora harpularia 
Lora incisula 
Lora impressa 
Lora pleurotomaria 
Lora rosea 
Lora scalaris 
Lora, v. spitsbergensis 
Lora tenuicostata 
Lora trevelliana 
Lora turricula 
Lora violacea 
Lora woodiana 
Philine sinuata 
Plicifusus arcticus 
Plicifusus kroyeri 
Plicifusus verkruzeni 
Pyrulofusus deformis 
Retusa obtusa 
Retusa pertenuis 
Retusa semen 
RANGE TO GULF OF CALIFORNIA 
Acteocina carinata 
Acteocina infrequens 
Admete microsoma 
Anachis penicillata 
Bullaria gouldiana 
Bulla quoyi 
Cadulus fusiformis 
Columbella, v. californiana 
Columbella carinata 
Columbella tuberosa 
Crassispira montereyensis 
Cryptogemma polycaste 
Cylichnella diegensis 
Cypraeolina pyriformis 
Dentalium fisheri 
Dentalium semipolitum 
Fusinus luteopictus 
Fusinus taylorianus 
Gadinia reticulata 
Haminoea vesicula 
Mangilia cetolaca 
Mangilia roperi 
Marginella politulus 
Melampus olivaccus 
Microglyphus estuarinus 
Mitromorpha filosa 
Pedipes unisulcatus 
Pedipes liratus 
Pleurobranchus digueti 
Terebra, v. philippiana 
Williamia peltoides 
RANGE TO LOWER CALIFORNIA 
Acteon punctocoelata 
Aesopus myrmecoon 
Alectrion californianus 
Alectrion cerritensis 
Alectrion, v. eupleura 
Alectrion fossatus 
Alectrion insculptus 
Alectrion mendicus 
Alectrion noduliferus 
Alectrion perpinguis 
Amphissa undata 
Amphissa versicolor 
Atys casta 
Buccinum strigillatum 
Conus californicus 
Columbella aurantiaca 
Columbella callimorpha 
Columbella hypodra 
Clathrodrillia fanchcrae 
Clathrodrillia, v. ophioderma 
Cryptoconus tremperianus 
Cryptoconus tryonianus 
Cylichnella diegensis 
Cytharella densilineata 
Cytharella fusconotata 
Cytharella janira 
Dentalium watsoni 
Exilia rectirostris 
Fusinus robustus 
Glyphostoma adria 
Haminoea olgae 
Kellettia kellettii 
Macron kellettii 
Macron lividus 
Marginella jewettii 
Microglyphis breviculus 
Olivella biplicata 
Olivella porteri 
Pseudomelatoma moesta 
Pseudomelatoma torosa 
Volvulella cooperi 
Volvulella cylindrica 
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