432 



XI. 



XII. 



XIII. 



XIV. 



ANIMAL CLASSIFICATION 



XV. 



XVI. 



XVII. 



Insecta. 



Arachnida (spiders, etc.). 



Pycnogonida. 



Mollusca (shellfish) : 

 i. Gastropoda. 



2. Lamellibranchiata. 



3. Cephalopoda. 



Polyzoa or Bryozoa. 



Halobates. 



Desis. 



Pycnogoniin. 



Atlanta, Archidoris, Carinaria, Chiton, 



Clione, Doris, Eolis, Glaucus, Hyalea, 



Janthina, Styliola. 

 Lithodomus. 

 Argonauta, Benthoteuthis, Eledone, 



Loligo, Nautilus, Octopus, Sepia, 



Sepiola, Spirula. 



Bowerbankia, Cellularia. 



Brachiopoda (lamp-shells). Terebratula. 



Echinodermata : 



1. Holothuroidea (tre- Cladodactyla. 



pangs). 



2. Crinoidea (feather- Antedon, Rhizocrinus. 



stars). 



3. Echinoidea (sea- Echinus, Salenia. 



urchins). 



4. Ophiuroidea (brittle- Ophioglypha. 



stars). 



5. Asteroidea (starfish). Archaster. 



XVIII. Chaetognatha. 



Sagitta, Spadella. 



XIX. Chordata : 





1. 



Urochordata, or Tu- 



Appendicularia, Doliolum, Pyrosoma, 





nicata. 



Salpa. 



2. 



Hemichordata. 



Balanoglossus (Enteropneusta). 



3- 



Cephalochordata 

 (lancelets). 



Amphioxus. 



4- 



Cyclostomata (lam- 

 preys). 





5- 



Pisces (true fish). 







(1) Chondropterygi 



l Raja, Chimaera, Scyllium. 





(sharks and 







rays). 







(2) Teleostomi 



Argyropelecus, Gadus, Gobius, Lepado- 





(bony fish). 



gaster, Macrura, Regalecus, Scopelus, 

 Scorpaena, So lea, Stomias. 



6. 



Ophidia (snakes). 



Hydrus, Distira. 



7. 



Cetacea (whales) : 







(1) Mystacocoeti. 



Balaena, Balasnoptera, Megaptera. 





(2) Odontocceti. 



Delphinus, Monodon, Orca, Phocaena, 



8. Pinnipedia (seals). 



Physeter. 

 Otaria, Phoca, Trichecus. 



