CONTENTS. Vll 



MoLLUSCA (Continued). Page. 



Amphineura 106 



Chaetopleura • 106 



Gastropoda 107 



Sycotypus 107 



Loligo pealii (Squid) 115 



ARTIIROPODA 124 



Crustacea 128 



Homarus americanus (Lobster) 128 



Callinectes hastatus (Blue Crab) 134 



Eupagurus (Hermit Crab) 138 



Hippa (Sand Mole) 139 



Squilla 139 



Mysis 141 



Talorchestia (Beach-Flea) 141 



Porcellio or Oniscus (Sow-Bug) . 142 



Caprella 143 



Branchipus (Fairy Shrimp) 143 



Daphnia 144 



Cyclops (Water-Flea) 145 



Argulus (Fish-Louse) 146 



Lepas (Goose-Barnacle) 146 



Arachnoidea : 147 



Limulus (Horseshoe Crab) 147 



Buthus (Scorpion) 149 



Epeira (Round-Web Spider) 150 



Phoxichilidium 152 



Myriapoda 152 



Lithobius (Centipede, Eai-wig) 152 



Julus (Thousand-legs) 153 



Insecta 154 



Acridium (Grasshopper) 154 



Apis mellifica (Honey-Bee) 159 



CHORDATA 164 



Urochorda 165 



Molgula manhattensis 165 



Perophora 168 



Botryllus 169 



Amaroecium (Sea-Pork) 170 



Salpa cordiformis 172 



Acrania 173 



Amphioxus lanceolatus 173 



NOTES FOR GUIDANCE IN MAKING PERMANENT PREPARA- 

 TIONS 175 



GLOSSARY 181 



INDEX 195 



