APPENDIX 



291 



Phylum Class 



Platyhelminthes f Turbellaria Flat worms 



< Trematoda Flukes 



[ Cestoda Tape-worms 



Nemathelminthes 



Nematoda Round worms 

 Acanthocephala Hook-headed worms 

 ' Chsetognatha Arrow- worms 



,120, 129 



Trochelminthes 

 molluscoida 



Rotifera 



' Polyzoa 

 Phoronida 

 'Brachiopoda 



Wheel-animalcules 



Bryozoa (moss animals) 



Lamp-shells 120, 123, 130, 138, 140 



ECHINODERMATA 



' Asteroidea 

 1 Ophiuroidea 

 ' Echinoidea 

 1 Holothuroidea 

 'Crinoidea 

 -Cystoidea 1 

 -Blastoidea J 



Sea-stars, starfishes 136, 172 



Brittle stars 



Sea-urchins 94 



Sea-cucumbers 125, 127 



Sea-lilies (stone-lilies) 66 



primitive echinoderms 



Annxjlata 

 (true worms) 



' Chaetopoda 

 Gephyrea 

 Hirudinea 



Sea-worms, earthworms . 



Sipunculids 



Leeches 



128 



Arthropod A 



Branchiata 

 { 1 Crustacea 



-Trilobita 

 ^Xiphosura 



Tracheata 



Onychophora 

 1 Myriapoda 

 ^Arachnoidea 

 ^Insecta 



Crabs, lobsters, shrimp, barnacles, ostra- 



cods 1 20, 1 24, 134 



Trilobites, eurypterids 121, 125, 132, 133 



Horseshoe crabs 124, 125, 132 



Peripatus 



Centipedes, millepedes 



Spiders, scorpions, mites, ticks. . . .130, 132, 136 



Insects IDS, 130, 136, 254 



MoLLUSCA r 'Pelycypoda Clams, oysters, mussels 130 



'Amphineura Chitons 



I 'Gastropoda Limpets, snails, slugs, sea-hares, etc.. . .120, 130 



I 'Scaphopoda Tusk-shells 



[ 'Cephalopoda Nautilus, cuttle-fish, ammonites. . .130, 137-130 



' Fossil and recent forms. 



- E.xtinct fossil forms. 



All other classes listed are as yet unknown in the fossil state. 



