STUDIES IN MARINE ECOLOGY. 



213 



List 2. Showing the Invertebrate Animals Taken from Crane's 

 Wharf Piles in Nine Years' Collecting. 

 The figures give an indication of comparative abundance in 1920 and are based 

 on the number of collecting teams reporting the several species. Absence of 

 figure indicates that the animal was not taken during this trip. 



PORIFERA 



Chalina arbuscula 



Cliona celata(?) 



Grantia ciliata 



Leucosolenia botryoides. . 

 Microcione prolifera. . . . 



CCELENTERATA 



Campanularia sp 



Clytia bicophora 



Eudendrium album. . . 



Eudendrium ramosum. . . 



Gemmaria gemmosa 



Hydr actinia echinata. . . . 



Metridium dianthus. . . . 



Obelia commissuralis . . . . 



Obelia geniculata 



Pennaria tiarella 



Sagartia lucice 



Sagartia leucolena 



Schizotricha lenella 



Serlularia pumila 



Tubularia crocea ....... 



Platyhelminthes 



Tetrastemma vermiculum 



Lineus bicolor 



Nemathelminthes 



Pontonema marinum. . . . 



ECHINODERMA 



Arbacia punctulata 



Asterias forbesi 



Aster ias vulgaris 



Henricia sanguinolenta . . 

 Annelida 



Arabella opalina 



Amphitrite attenuata. . . , 



Autolytus cornutus 



Harmothce imbricata . . . . 



Hydroides hexagonus. . . . 



Lepidonotus squamatus . . 



Leprcea rubra 



Nereis pelagica . 



Nicolea simplex 



Podarka obscura 



Polycirrus eximeus 



Polydora sp , 



Phyllodoce catenula 



Sabellaria vulgaris , 



Spirorbis spirorbis 



Sthenelais leidyi 



Thelepus sp , 



Bryozoa 



jEtea anguina , 



Bugula turrita 



Bicellaria ciliata 



Crista eburnea 



Lepralia pertusa 



Membranipora pilosa . . . 



Flustrella hispida 



Schizoporella unicornis. . 

 Arthropoda 



Amphithoe rubricata 



Autonas smithi 



Anoplodactylus lentus . . . 



Balanus balanoides 



Balanus eburneus 



Caprella geometrica 



Erichsonella filiformis . . . 



Idothea baltica 



Libinia dubia 



Libinia emarginata 



Lygidia oceanica 



Orchestia agilis 



Palcemonetes vulgaris . . . 



Palene empusa 



Pinnotheres maculata . . . 



Panopeus sayi 



Talorchestia longicornis . . 



Tanystylum orbicular e. . . 

 Mollusc a 



Acmea testudinalis 



Anomia aculeata 



Anomia ephippium 



Area pexata 



Bittium alternatum 



Busy con carica 



Columbella avara 



Columbella lunata 



Crepidula convexa 



Crepidula fornicata 



Crepidula plana 



Coryphella gymnota 



Lacuna vincta 



Littorina litorea 



Littorina palleata 



Littorina rudis 



Modiolus modiolus 



Mytilus edulis 



Teredo navalis 



Odostomia sp 



Urosalpinx cinereus . . . . 

 Chord ata 



Amarcecium constellatum 



Botryllus schlosseri 



Didemnum lutarium 



Molgula arenaria 



Molgula manhattensis . . . 



Molgula papulosa 



Perophora viridis 



Styela partita 



