FISHERY BULLETIN: VOL. 72. NO. 3 



Table 4. — Epifaunal invertebrates collected within the perimeter of the study area. 



Porifera 



Leucilla (= Rhabdodermilla) nuttingii Urban 



Leucosolenia sp. 



Tethya aurantia (Pallas) 



Verongia thiona de Laubenfels 



Cliona celata Grant 

 Cnidaria 



Aglaophenia spp. 



Corynactis californica Carlgren 



Epiactis prolifera Verrill 



Pachycerianthus sp. 



Tubulana sp. 



Balanophyllia elegans Verrill 



Paracyathus stearnsi Verrill 



Lophogorgia chilensis (Verrill) 



Muricea californica (Aurivillius) 



Muricea truticosa (Verrill) 



Tealia coriacea (Cuvier) 



Harenactis attenuata Torrey 



Parazoanthus lucificum Cutress and Peguegnat 



Serlularia sp. 



Plumularia sp. 



Anthopleura elegantissima (Brandt) 

 Annelida 



Diopatra ornata Moore 



Salmacina Iribanchiata (Moore) 



Phyllochaetopterus prolifica Potts 



Eudistylia polymorpha Johnson 



Dexiospira spirillum (Linnaeus) 



Spirobranchus spinosus Moore 

 Arthropoda 



Paguristes ulreyi Schmitt 



Loxorhynchus grandis Stimpson 



Taliepus nuttallii Randall 



Synalpheus spp. 



Alpheus dentipes Guerin 



Panulirus interruptus (Randall) 



Betaeus harfordi (Kingsley) 



Cancer anthonyi Rathbun 



Arthropoda — Continued 

 Hippolysmata californica Stimpson 

 Parapleustes oculatus Barnard 

 Balanus tintinnabulum Pilsbry 

 Balanus pacificus Pilsbry 

 Pachycheles rudis Stimpson 

 Idothea resecata (Stimpson) 

 Acanthomysis sculpta (Tattersall) 

 Lophopanopeus frontalis (Rathbun) 

 Ampithoe humeralis Stimpson 



Mollusca 

 Kelletia kelletii (Forbes) 

 Mitra idae Melville 

 Bursa californica (Hinds) 

 Conus californicus Hinds 

 Norrisia norrisi (Sowerby) 

 Astraea undosa (Wood) 

 Trivia californiana (Gray) 

 t^egatliura crenulata Sowerby 

 Cypraea spadicea Swainson 

 Haliotis rufescens Swainson 

 Haliotis corrugata Wood 

 Shaskyus (= Jaton) festivus Hinds 

 Simnia vidlen Sowerby 

 fjlaxweilia gemma (Sowerby) 

 Crassispira semiinflata (Grant and Gale) 

 Acteon punctocaelatus (Carpenter) 

 Mitrella carinata (Hinds) 

 Crepidula adunca Sowerby 

 Anisodoris nobilis (MacFarland) 

 Glossodoris californiensis (Bergh) 

 Dendrodoris fulva (MacFarland) 

 Cadlina llavomaculata MacFarland 

 Flabellinopsis iodinea (Cooper) 

 Hinnites multirugosus (Gale) 

 Platyodon cancellatus (Conrad) 

 Parapholas californica (Conrad) 

 Adula (= Botula) falcata (Gould) 

 Litliophaga plumula (Hanley) 



Mollusca — Continued 

 Leptopecten latiauratus (Conrad) 

 Lima fiemphilli Henlem and Strong 

 Saxidomus nuttalli Conrad 

 Octopus bimaculatus Verrill 

 Penitella penita (Conrad) 

 Chaeceia ovoidea (Gould) 



Bryozoa 

 Diaperoecia californica (d'Orbigny) 

 Membranipora membranacea (Linnaeus) 

 f/lembranipora serrilamella Osburn 

 Bugula neritina (Linnaeus) 

 Antropora tincta Osborn 

 Thalamoporella californica (Levinson) 



Echmodermata 

 Dermasterias imbricata (Grube) 

 Astropecten armatus Gray 

 Astrometis sertulifera (Xantus) 

 Henricia leviuscula (Stimpson) 

 Patiria miniata (Brandt) 

 Pisaster brevispinus (Stimpson) 

 Pisaster giganteus (Stimpson) 

 Ophioplocus esmarki Lyman 

 Opiiiothrix spiculata Le Conte 

 Parastichopus parvimensis (Clark) 

 Eupentacta quinquesemita (Selenka) 

 Amphipholis sp. 



Ophioderma panamensis Lutken 

 Ophiopteris papulosa (Lyman) 

 Strongylocentrotus franciscanus 



(A. Agassiz) 

 Strongylocentrotus purpuratus 

 (Stimpson) 



Chordata 

 Styela montereyensis (Dall) 

 Polyclinum planum (Ritter and Forsyth) 

 Pyura tiaustor (Stimpson) 

 Eudistoma diaptianes Ritter and Forsyth 



Table 5. — The conspicuous macroinvertebrates in the Del Mar kelp bed. 



Species 



Diopatra ornata 

 Styela montereyensis 

 l^uricea californica 

 Kelletia kelletii 

 Parapholas californica 

 Paguristes ulreyi 

 Muricea fruticosa 

 Strongylocentrotus franciscanus 

 Tealia coriacea 

 Tethya aurantia 

 Astrometis sertulifera 

 Lophogorgia chilensis 

 Strongylocentrotus purpuratus 

 Pisaster giganteus 



' Occurrence in 96 l-m^ quadrats. 

 2 Per m2. 



^ n is small — index of dispersion inadequate. 

 " Probability of a random distribution. 



August 1972 was the tubicolous polychaete 

 Diopatra ornata (Table 5). Diopatra was seen 

 along the transect during the early years of 

 the study (1967-68) however, it was not until the 

 summer of 1971 that the species was considered 

 to be common. During August 1972, Diopatra 

 occurred in all 12 of the fixed quadrats, and 

 quadrat number 7, which contained only a few 



individuals in 1968, had many clumps of Dio- 

 patra tubes. The tubes covered an estimated 

 25-30'7f of the total area (4 m^) in the quadrat. 

 Unpublished work of Ray Emerson (pers. com- 

 mun.)"* demonstrates that approximately 90% 



''Emerson, R. In preparation. Reproductive biology and popu- 

 lation dynamics of the polychaete Diopatra ornata. Ph.D. 

 thesis, Univ. of Southern Calif. 



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