CLASSIFICATION. 



CHONDROPTJSRI GII . 



ARTICULATES. 

 I. INSECTS, 



Twelve ORDERS 

 Of TRUE INSECTS. 



GANOIDS. Saurida, (Gar-fish, &c.) 



" Eleutheropomi, (gills free.) 



Chimceridte, (Sea Monsters.) 

 Sturionidce, (Sturgeons.) 

 Plagiostomi, (transverse mouths.) 



j Squalida, (Sharks.) 



PLACOIDS-^ ( Raiidce, (Rays.) 



Cyclostomi, (Round fleshy mouth or lip.) 

 [Petromyzonida, (Lampreys.) 



IBranchiostoma, (Gill-mouth, i. e., having 

 cirri, or curled filaments in the mouth.) 

 [Amphioxidce, (Lancelots.) 

 Very anomalous, and sometimes included 

 with the Cyclostomi. 

 Three classes. INSECTS. 



CRUSTACEANS. 



WORMS or ANNELIDANS. 



1. COLEOPTERA (Sheath-wings), Beetles, Hornbugs. 



2. STREPSIPTERA (Twisted-wings), Wasp-flies. 



3. DERMAPTERA (Skin-wings), Ear-wigs. 



4. ORTHOPTERA (Strait-wings). 



Sub-orders, CURSORIA (Runners), Cockroaches. 



RAPTORIA (Graspers), Mantises. 



With biting I AMBULATORIA (Walkers), Walking 



mouths. Sticks. 



SALTATORIA (Leapers), Grasshoppers, 

 Crickets, &c. 



5. TRICHOPTERA (Hair-wings), Caddice-flies, &c. 



6. NEUROPTERA (Nerve-winga), White Ants, Dragon- 



flies, &c. [&c. 



7. HYMENOPTERA (Membranous-wings), Bees, Wasps, 



8. LEPIDOPTERA (Scale-wings), Moths, Butterflies, &c. 



9. HEMIPTERA (Half-wings), Fruit-bugs, Bed-bugs, &c. 

 With sucking 10. DIPTERA (Two-wings), Flies, Musquitoes, &c. 



mouths. 11. APHANIPTERA (Invisible or rudimental wings), 



Fleas, Jiggers. 



12. APTERA (No wings), Lice, Lepismas. 



Sometimes railed 13 ' MYRIAPODA (with innumerable feet), Thousand-leg- 

 Sub-classes & ed Worms, Centipedes. 



14. ARACHNIDA, Spiders, Scorpions, Ticks, Mites. 



2d. CRUSTACEANS. Five orders (or sub-classes,) (Dana). 



1. Decapoda (Ten-footed), Crabs, Lobsters, Shrimps. 



2. Tetradecapoda (Fourteen-footed), Sow-bugs, Sand-fleas, &c. 



3. Entomostraca (Shell insects), Cyclops, Daphnia, Cypris, 



Limulus, (Sea-Spiders), and possibly also the TRILOBITES. 



4. Cirripedes (curled jointed-feet), Barnacles. 



5. Rotatoria or Rotifera Wheel Animalcules. 



8<L WORMS or ANNELIDANS. Four orders. 



1. Tubulibranchiata (Gills in tubes), Serpula, Vermilia, &c. 



2. Dorsibranchiata (Gills on the back), Sea-Centipedes. 

 8. Abranchiata (without gills), Leeches & Earth-worms. 

 4. Entozoa, (Internal worms,) or White blooded Worms. 



