. ▁Pont od ril us ), ▁a ▁simple ▁gut ▁with ▁no ▁g izz ard ▁and ▁no ▁ty ph los ole . ▁ ▁They ▁are ▁true ▁earth w orm s , ▁having ▁a ▁complex ▁v asc ular ▁system ▁with ▁cap ill aries , ▁the ▁male ▁por es ▁( on ▁ 1 5 ▁or ▁ 1 3 ) ▁behind ▁the ▁female ▁por es ▁( on ▁ 1 4 ) ▁and ▁a ▁mult ic elled ▁cl it ell um . ▁ ▁They ▁were ▁at ▁one ▁time ▁placed ▁in ▁the ▁earth w orm ▁families ▁G loss os cole c idae ▁or ▁Al m idae , ▁but ▁at ▁present ▁are ▁considered ▁to ▁const itute ▁their ▁own ▁family . ▁ ▁C ri od ril idae ▁species ▁( cri od ril ids ) ▁are ▁found ▁in ▁mud ▁next ▁to ▁la kes ▁and ▁water ways ▁( cf . ▁North ▁American ▁S par gan oph ilus ). ▁ ▁They ▁feed ▁in ▁the ▁low - ox y gen ▁mud ▁and ▁organ ic ▁material , ▁but ▁with ▁their ▁highly ▁v asc ular ized ▁posterior ▁region ▁on ▁or ▁near ▁the ▁surface . ▁ ▁C ri od ril us ▁has ▁no ▁accepted ▁common ▁name ; ▁C ri od ril us ▁bath y b ates ▁is ▁the ▁Lake ▁Bi wa ▁earth w orm . ▁ ▁References ▁http :// opus cul a . elte . hu / PDF / Tom us 3 7 / 2 _ Re view % 2 0 of % 2 0 C ri od ril idae . pdf ▁ ▁Category : H ap lot