OF CONTENTS 



PAGE 



PREFACE v 



TABLE OF MAGNIFICATIONS xi 



LIST OF THINGS TO BE FURNISHED BY THE LABORATORY xii 



LIST OF THINGS TO BE FURNISHED BY THE STUDENT xHi 



PARAM^ECIUM CAUDATUM EHRENBERG i 



GRANTIA CILIATA FABRICIUS 10 



PENNARIA TIARELLA MCRADY 16 



SERTULARIA PUMILA LINN^US 23 



TlMA FORMOSA L. AGASSIZ 27 



GONIONEMUS. MURBACHII MAYER 33 



AURELIA AURITA (L.) VAR. FLAVIDULA PERON ET LESUEUR. . . 35 



METRIDIUM MARGINATUM MILNE-EDWARDS 45 



DENDROCCELUM LACTEUM (MULLER) 55 



DlCROCCELIUM LANCEATUM STILES AND HASSALL 62 



T^ENIA SAGINATA GOEZE 72 



ASCARIS LUMBRICOIDES LlNN^EUS VAR. SUILLA 79 



LUMBRICUS TERRESTRIS L. MlJLLER 88 



NEREIS VIRENS SARS 97 



HlRUDO MEDICINALIS LlNN^US 105 



DAPHNIA PULEX MULLER 113 



HOMARUS AMERICANUS MlLNE-ED WARDS 122 



SCHISTOCERCA AMERICANA DRURY 145 



AGELENA N^EVIA WALCKEN^R 158 



ASTERIAS FORBESI (DESOR) 174 



OPHIOPHOLIS ACULEATA (LINNAEUS) 183 



PENTACRINUS ASTERIA (CAPUTMEDUS^:) (MULLER) 189 



ARBACIA PUNCTULATA (LAMARCK) 191 



THYONE BRIAREUS (LESUEUR) 202 



VENUS MERCENARIA LlNN^EUS 208 



LlMAX MAXIMUS LlNN^EUS 22O 



LOLIGO PEALII LESUEUR 23 1 



MOLGULA MANHATTENSIS (DE KAY) 256 



ix 



