Molluscs of Southern California
(Click on images or names to open). Yellow background
= Introduced species
Photographed and compiled by Peter J.
Bryant (pjbryant@uci.edu)
Department of
Developmental and Cell Biology, University of California, Irvine, CA 92697
and some guests |
| Bivalvia |
| Cardiidae |
Chamidae |
Galeommatidae |
Limidae |
Lyonsiidae |
Pacific eggcockle,
Laevicardium substriatum
|
Pacific
Jewelbox,
Pseudochama exogyra
|
Internally-shelled clam,
Chlamydoconcha orcutti |
Hemphill Fileclam,
Limaria hemphilli |
California Lyonsia,
Lyonsia californica |
| Mactridae |
|
|
|
|
Pacific Gaper Clam,
Tresus nuttallii |
|
|
|
|
| Mytilidae |
|
Quagga Mussel,
Dreissena rostriformis bugensis |
Ribbed Mussel,
Geukensia demissa |
Asian
date mussel,
Musculista senhousia |
California Mussel,
Mytilus californianus |
 Mediterranean Mussel,
Mytilus gallopovincialis
|
| Ostreidae |
Pectinidae |
Olympia Oyster,
Ostrea conchaphila (= lurida?) |
Pacific Oyster,
Crassostrea gigas |
Giant
Rock Scallop,
Crassadoma gigantea |
Speckled Scallop,
Argopecten ventricosa |
Kelp Scallop,
Leptopecten latiauratus |
| Petricolidae |
Pholadidae |
|
Semelidae |
Hearty Petricolid,
Petricola carditoides (?) |
Rough Piddock,
Zirfaea pilbryi |
|
Asian Semele,
Theora lubrica |
Clipped semele,
Semele decisa |
| Solecurtidae |
|
|
|
Tellinidae |
Neighbor Tagelus,
Tagelus affinis |
California
Jack-knife Clam,
Tagelus californianus |
Lesser Tagelus,
Tagelus subteres |
|
Bent-nosed Clam,
Macoma nasuta |
| Veneridae |
|
Ungulinidae |
Pacific
Littleneck,
Leukoma staminea |
Japanese
Littleneck,
Venerupis philippinarum |
California
Butter Clam,
Saxidomus nuttalli |
|
 Orb Diplodon,
Diplodonta orbella
|
| Cephalopoda |
Squid,
Loligo (opalescens?) juvenile |
California two-spot Octopus,
Octopus bimaculoides
|
Octopus |
|
|
| Gastropoda |
| Archaeogastropoda |
Archaeopulmonata |
| Fissurellidae |
|
|
Ellobiidae |
Volcano Limpet,
Fissurella volcano |
Giant Keyhole Limpet,
Megathura crenulata |
|
|
Salt Marsh Snail,
Melampus olivaceus |
| Patellogastropoda |
|
| Lottiidae |
Southern Finger
Limpet,
Lottia austrodigitalis |
Rough Limpet,
Lottia scabra |
Owl Limpet,
Lottia gigantea |
File
Limpet,
Lottia limatula |
Painted Limpet,
Tectura depicta |
| Order Littorinimorpha |
|
| Atlantidae |
Cypraeidae (cowries) |
Hydrobiidae |
Littorinidae |
Sea snail,
Atlanta californiensis |
Chestnut Cowrie,
Neobernaya spadicea |
New
Zealand Mud Snail,
Potamopyrgus antipodarum |
Checkered
Periwinkle,
Littorina scutulata |
Gray
Littorine,
Littorina planaxis
|
| Calyptraeidae (Slipper snails and others) |
Slipper Limpet,
Crepidula cf perforans |
Slipper limpet,
Crepidula naticarum |
Onyx Slipper Limpet,
Crepidula onyx |
Pacific Half-slippersnail,
Crepipatella lingulata |
Spiny cup-and-saucer snail, Crucibulum spinosum |
| Naticidae |
Pterotracheidae |
Triviidae |
Smooth Brown Turban
(Norris' Top Shell), Norrisia norrisi |
Moon Snail,
Neverita reclusiana |
 Sea elephant,
Firoloida desmarestia.
|
Coffee Bean Snail,
Pseudopusula californiana |
Solander's Trivia,
Pusula solandri |
| Vermetidae |
|
|
|
|
Scaly
Worm Shell,
Thylacodes squamigerus
|
|
|
|
|
| Nudibranchiata |
| Aegiridae |
Aeolidiidae |
Chromodorididae |
Salt-and-pepper Doris,
Aegires albopunctatus |
Shaggy Mouse Nudibranch,
Aeolidia papillosa |
Red-tentacled Spurilla,
Spurilla oliviae
|
California Blue Dorid,
Felimare californiensis |
Porter's Chromodorid Nudibranch,
Mexichromis porterae
|
| Corambidae |
Dendrodorididae |
Dendronotidae |
Frost-spot Nudibranch,
Corambe pacifica
|
Steinberg's Corambe
Corambe steinbergae
|
White-spotted sea goddess.
Doriopsilla albopunctata |
Doriopsilla davebehrensi |
Branched Dendronotus,
Dendronotus venustus |
| Dironidae |
Discodorididae |
Dorididae |
|
Painted Dirona,
Dirona picta |
Sea Lemon,
Peltodoris nobilis |
San Diego Dorid,
Diaulula sandiegensis |
Monterey Sea Lemon,
Doris montereyensis |
|
| Dotidae |
Facelinidae |
Fionidae |
|
Hammerhead Doto,
Doto amyra |
British Columbia Doto,
Doto columbiana |
Opalescent Sea Slug,
Hermissenda opalescens
|
 Fiona nudibranch,
Fiona pinnata |
|
| Flabellinidae |
|
Bertsch's Aeolid,
Flabellina bertschi |
Spanish shawl,
Flabellina iodinea
|
Three-lined aeolid,
Flabellina trilineata |
Red-gilled Nudibranch,
Flabellina verrucosa |
|
| Goniodorididae |
|
Atlantic Ancula,
Ancula gibbosa |
Pacific Ancula,
Ancula pacifica |
Angeles okenia
Okenia angelensis |
Hopkin's Rose,
Okenia rosacea |
|
Onchidorididae |
Plakobranchidae |
|
|
|
Black-tipped Spiny Doris,
Acanthodoris rhodoceras |
Hedgpeth's sea hare,
Elysia hedgpeth
|
|
|
|
| Polyceratidae |
Cockerell's Dorid,
Limacia cockerelli
|
McDonald's Dorid,
Limacia mcdonaldi |
Sorcerer's Nudibranch,
Polycera atra |
Hedgpeth's dorid,
Polycera hedgpethi |
Speckled Triopha,
Triopha maculata |
| Tethyidae |
Trinchesiidae |
Zephyrinidae |
|
|
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Hooded Nudibranch,
Melibe leonina |
White-crusted Aeolid,
Tenellia (=Cuthona) albocrusta |
Cockscomb Nudibranch,
Janolus barbarensis
|
|
|
| Opisthobranchia |
| Acteonidae |
Aglajidae |
Aplysiidae |
 Striped Barrel Snail,
Rictaxis punctocaelatus |
Striped Sea Hare,
Navanax inermis |
Sea Hare,
Aplysia
californica
|
 California
Black Sea
Hare,
Aplysia vaccaria |
Eelgrass Sea Hare,
Phyllaplysia taylori |
| Bullidae |
Hermaeidae |
Haminoeidae |
Limapontidae |
Pyramidellidae |
 Bubble Snail,
Bulla gouldiana |
Enteromorpha-eating Sapsucker,
Aplysiopsis enteromorpha |
Blister Glassy-bubble,
Haminoea vesicula
|
Brown-streak Stiliger,
Stiliger fuscovittatus |
Adams' pyram,
Pyramidella adamsi |
| Tylodinidae |
|
|
|
|
Sidegill Slug,
Tylodina fungina |
|
|
|
|
| Order Neogastropoda |
| Conidae |
|
|
|
|
California Cone
Snail,
Conus californicus |
|
|
|
|
| Muricidae |
Angular Unicorn,
Acanthinucella spirata |
Belcher's Murex,
Forreria belcheri |
Gem Murex,
Maxwellia gemma |
Rock snail,
(Mexacanthina lugubris?) |
Striped Dogwinkle,
Nucella emarginata |
Festive Murex,
Pteropurpura festiva |
Poulson's Dwarf Triton,
Roperia poulsoni |
|
|
|
| Nassariidae |
Potamididae |
|
|
Channeled Basket Snail,
Nassarius fossatus |
Nassa Mud Snail,
Nassarius sp. |
California Horn Snail,
Cerithideopsis californica |
|
|
| Order Stylommatophora |
|
|
| Helicidae |
|
Subulinidae |
|
European Garden Snail,
Cornu aspersum |
Spanish Snail,
Otala lactea |
|
Decollate Snail,
Rumina decollata |
|
| Polyplacophora |
Pulmonata (Land snails) |
|
|
| Mopaliidae |
Lepidochitonidae |
Xantonychidae |
|
 Mossy Chiton,
Mopalia
muscosa |
Southern
Spiny Chiton,
Nuttallina fluxa |
Southern California Shoulderband, Helminthoglypta tudiculata |
|
|
| Vetigastropoda |
|
| Haliotidae |
|
Black Abalone,
Haliotis cracherodii |
Green Abalone,
Haliotis fulgens |
Red Abalone,
Haliotis rufescens |
Threaded Abalone, Haliotis kamtschatkana assimilis
|
|
| Trochidae |
Turbinidae |
|
Speckled Turban,
Tegula gallina |
Black Turban,
Tegula funebralis |
Wavy Top Turban,
Astraea undosa |
|
|
| Thecosomata: Desmopteridae |
Discidae |
|
|
|
Sea Butterfly,
Desmopterus pacificus |
Rotund Disc,
Discus rotundatus |
|
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