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Descriptive Zoology. 

 BRANCH VII. MOLLUSCOI'DA. 



Class I. Polyzo'a sea mats. 



Class II. Brachiop'oda lamp shells. 



BRANCH VIII. ECHINODER'MATA. 



Class I. Asteroi'dea starfish. 



Class II. Ophiuroi'dea brittle stars. 



Class III. Echinoi'dea sea urchins. 



Class IV. Holothuroi'dea sea cucumbers. 



Class V. Crinoi'dea sea lilies. 



BRANCH IX. ANNULA/TA. 



Class I. Chaetop'oda (ke-top'-o-da) earthworm. 

 Class II. Gephyre'a (jef-e-re'-a). 

 Class III. Hirudm'ea leech. 



BRANCH X. ARTHROP'ODA. 



Class I. Crusta'cea crayfish, crab, barnacle, cyclops. 



Class II. Myriap'oda centiped, milliped. 



Class III. Insec'ta grasshopper, dragon fly, water bug, butterfly. 



Order I. Thysanu'ra small, wingless insects. 



Order II. Orthop'tera grasshopper, cricket, cockroach. 



Order III. Odona'ta dragon fly, damsel fly. 



Order IV. HemTp'tera water bug, squash bug, cicada. 



Order V. Neurop'tera ant-lion. 



Order VI. Lepidop'tera butterfly, moth. 



Order VII. DTp'tera housefly, horse fly, flesh fly, mosquito. 



Order VIII. Coleop'tera May beetle, potato beetle, tiger beetle. 



Order IX. Hymenop'tera bee, wasp, ant, gallfly, ichneumon fly. 

 Class IV. Arach'nlda spiders, ticks, mites, daddy longlegs. 



BRANCH XI. MOLLUS'CA. 



Class I. Pelecyp'oda clam, oyster, scallop, mussel. 



Class II. Amphineu'ra chi'ton (kl'-ton). 



Class III. Gastrop'oda snails, fresh-water and marine. 



Class IV. Cephalop'oda squid, cuttlefish, oc'topus, nau'tilus. 



