CONTENTS 15 



PAGE 



ARTHROPODA 165 



Crustacea 167 



Homarus aniericanus (Lobster) 167 



Callinectes sapidus (Blue Crab) 175 



Pagurus (Hermit Crab) 179 



Emerita (Hippa, Sand Mole) 180 



Chloridella (Squilla) 181 



Michtheimysis (or Heteroinysis) 182 



Talorchestia (Beach-flea) 182 



Porcellio or Oniscus (Sow-bug) 184 



Caprella (Goat Shrimp) 184 



Branchipus (Fairy Shrimp) 185 



Daphnia 186 



Cyclops (Water-flea) 186 



Argulus (Fish-louse) 187 



Lepas (Goose Barnacle) 188 



Arachnida . 189 



Limulus (Horseshoe Crab) 189 



Buthus (Scorpion) 195 



Epeira (Round-web Spider) 196 



Phoxichilidium 198 



Myriapoda 199 



Lithobius (Centipede, Earwig) 199 



Julus (Thousand-legs) 199 



Insecta 200 



Acridium (Grasshopper) 200 



Apis mellifica (Honey-bee) 206 



ECHINODERMATA 211 



ASTEROIDEA 212 



Asterias (Starfish) 212 



Ophiuroidea 219 



Ophiura (Serpent-star) 219 



Echinoidea 220 



Arbacia or Strongylocentrotus (Sea Urchin) 220 



HOLOTHTTROIDEA 226 



Thyone (Sea Cucumber) 226 



CHORDATA '. 231 



Enteropneusta 233 



Dolichoglossus (Balanoglossus) kowalevskii 233 



Urochorda 234 



Molgula manhattensis 234 



Perophora 238 



Botryllus 239 



Amaroucium (Sea Pork) 240 



Salpa cordiformis 242 



Cephalochorda 243 



Amphioxus lanceolatus 243 



NOTES FOR GUIDANCE IN MAKING PERMANENT PREPA- 

 RATIONS 245 



GLOSSARY 251 



INDEX 269 



