BBAKCn CLASS 



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FAMIXY 



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PLATTHEI.MINTHES. 

 Flat worms, nearly all 

 hermaphodltes. 



NEMATHELMINTHBS, 

 Round worma, nonsegr- 

 mented, eexes separate. 



CESTODA, 



Ribbon shaped, segment- 

 have no fixation apparatus 

 have no digestion apparatus 

 on head. Adult lives In In- 

 testines. 



TKEMATODA, 

 Fiat worms, nonsegment- 

 ed, have digestive canal, 

 no anus, have one or two 

 suckers on ventral surface. 



ACANTHOCEPH A LA. 

 Slender worms, complete 

 digestive canal, are found 

 in all tissues of domestic 

 animals except bone. 



DCEMATODA, 



Slender worms, complete 

 digestive canal, are found 

 in all tissues of domestic 

 animals except bone. 



TAENIIDAE, 



Head always has four 

 suckers between which la 

 found a depression or a 

 proboscis. Segments usu- 

 ally have their gentlal op- 

 enings on margin. 



BOTHRIOCEPHALIDAE, 



Found mostly in fishes. Eothi 



DISTOMIDAE, 



All have two suckers, an 



anterior and ventral. 



ECHINORYNCHIUAE, 

 Found in digestive canal 

 of vertebrates. 



ASCARIDAE, 



Large Arm. body, resemble 

 earth worms, mouth Is 

 surrounded by three Ups. 

 Usually found in small in- 

 testine. 



OXYURIDAE, 



Cylindrold body, 



pointed, mouth 



stomach large. 



tan I Oxyur 

 nud'^llo^^'ur 



STRONGTLIDAE, 



Body cylindrold, mouth 



either nude, armed or 



paplllated, oseophagus 



large. 



TRICHOTRACHELIDAE, 

 Body slender in anterior 

 portioti, enlarged poster- 

 iorly for containing intes- 

 tine, mouth nude, anus 

 terminal, all live in Intes- 

 tine. 



FILARIDAE, 



Long thread like body, 

 mouth or triangular .oeso- 

 phagus small. 



GNATHOSTOMIDAE, 

 Head distinct, oviparous. 



