APPENDIX. 391 



Division A. Anarthropoda. No jointed limbs. 



CLASS I. GEPHYREA** ("Spoon-worms"). 



CLASS II. ANNELIDA (" Ringed- worms "). Ex. Leeches** 

 (Hirudinea}, Earthworms** Oligochata}, Tube-worms 

 (Tubicola}, Sea-worms and Sea-centfpedes (Errantia}. 



CLASS III. CH^TOGNATHA ** ("Arrow-worms"). 



Division B. Arthropoda or Articulata. Limbs jointed to the 

 body. 



CLASS I. CRUSTACEA ("Crustaceans"). Ex. Barnacles and 

 Acorn-shells (Cirripedia}, Water-fleas (Ostracoda}, 

 Brine-shrimps and Fairy-shrimps (Phyllopoda}, Trilo- 

 bites * (TnVofrf to), King-crabs and Eurypterids * (Mer- 

 ostomata}, Wood-lice and Slaters (Isopoda}, Sand-hop- 

 pers (Amphipoda}, Lobsters, Shrimps, Hermit-crabs, and 

 Crabs (Decapoda}. 



CLASS II. ARACHNIDA. Ex. Mites (Acarina}, Scorpions (Pedi- 

 palpi}, Spiders (Araneida}. 



CLASS III. MYRIAPODA. Ex. Centipedes (Chilopoda}, Millipedes 

 and Galley-worms (Chilognatha}. 



CLASS IV. INSECTA ("Insects"). Ex. Field-bugs (Hemiptera} ; 

 Crickets, Grasshoppers, &c. (Orthoptera} ; Dragon-flies 

 and May-flies (Neuroptera} ; Gnats and House-flies (Dip- 

 tera) ; Butterflies and Moths (Lepidoptera} ; Bees, Wasps 

 and Ants (Hymenoptera} ; Beetles (Coleopterd). 



SUB-KINGDOM V. MOLLUSCA. 



Animal soffc-bodied, generally with a hard covering or shell; 

 no distinct segmentation of the body ; nervous system of scat- 

 tered masses. 



CLASS I. POLYZOA ("Sea-Mosses"). Ex. Sea-mats (Flustra), 

 Lace-corals (Fenestellida*}. 



CLASS II. TUNICATA ** (" Tunicaries") Ex. Sea-squirts 

 (Ascidia}. 



CLASS III. BRACHIOPODA ("Lamp-shells"). Ex. Goose-bill 

 Lamp-shell (Lingula}. 



CLASS IV. LAMELLIBRANCHIATA ("Bivalves"). Ex. Oyster 

 (Ostrea), Mussel (Mytilus), Scallop (Pecten), Cockle 

 (Cardium}. 



CLASS V. GASTEROPODA ("Univalves"). Ex. Whelks (Bucci- 

 num), Limpets (Patella}, Sea-slugs** (Doris}, Land- 

 snails (Helix}. 



CLASS VI. PTEROPODA ("Winged Snails"). Ex Hyalea, Cleo- 

 dora. 



CLASS VII. CEPHALOPODA ("Cuttle-fishes"). Ex. Calamary 

 (Loligo}, Poulpe (Octopus}, Paper Nautilus (Argon- 

 auto}, Pearly Nautilus (Nautilus}, Belemnites,* Ortho- 

 ceratites, * Ammonites. * 



