102 K. H. JI.ABH^OB'B, 



Tannin, o6pa30Mi, qTO cjishoh 3KT0AepMHqecKin KaHajn> (o6pa3yfoin,iHCH nyTeiWb HHBarnHaHin 

 hjih AeJiaiwnHaiuB) npopbmaeTCH bx n.ejioiu'b. 



TaKHMi. o6pa30Mii OHToreeifl He AaBajia HMKaKHXT, yKa3aein na cymecTBOBame Kanofi 

 nnSyAB o6oco6jeHHOH MesoAepiwajbHofi bopohkh, a, ciajio 6biTb, cxoactbo ct> MeTaHe#pHAiaMH 

 ocHOBbiBajiocb jranib na tomtj •taKT'fe, ito bt> o6ohxt» cjiyqaaxi, t. e. nam. y aHHewb, Tani 

 h y Enteropneusta, yKa3aHHbie opranbi ycTanaBJiBBaioTi cooSmenie lueatAy nejoMOM-b h na- 

 pyamoB cpe^OH. 



Ho aioro, pa3yM-BeTCH, AaJieKO eme HeAOCTaToiao jjia ycTanoBJiema yKa3aHHO& roMO-ioriH 

 iweacAy He<ppnAiHMH h xoSothbimh KaHa.ia»in. fflnenreJib (Spengel, 93) coBepmeHHo ocHOBa- 

 TejbHO yKa3biBajn>, MeatAy npoiHivrb, Ha t. na3. «cnHHHbia nopbi» Oligochaeta, ci, KOTopbiMn 

 mojkho Tanate cpaBHHTb Eichelpforten Enteropneusta. 



npouecct pereHepan,iH ji&erh mwb onpeA'B.ieHHbin yKa3ania OTHOCHTeibHO MOp^ojiorin, a 

 TaKHte h 3B0JHon,iH 3thxt> opraHOBi y Ptychodera minata. 



ITpeatAe Bcero Hya^HO OTMBTHTb tott, cnoco6-h perenepanin ne<i>pnAieB'b, Kor^a 3aKAadbt- 

 oawnica den, nepumoueaMUbin eopoutcu u dea stcmodepMaAbubixz onauenia. 3ABCb mm bhahmt. 

 norayK) aHajioriio ct> nponeccoiat oo"pa30BaHia MeTaHe<ppnAieBB y Annelides. PereiiepaTHBiibin 

 opraHoreHe3i> coxpaHaerb 3A"ECb najiBHreHeTnqecKia qepTbi pa3BHTia opraua, SjaroAapa qeiuy 

 rnnoTe3a IHnMKeBnqa OTHOCHTejibHO roMOJiorin xo6oTUbix , b nop"b cl MeTaHe<i>pHAiaMH KOJibia- 

 Tbixt qepBeft nojiyiaerb peajibHyio ocHOBy. 



OTMi^y, OAHaKO, «rro perenepaTHBHbiH opranoreHe3T> Aaerb naMB yKa3aHia Ha cymecTBo- 

 Banie em,e Gojite npHMBTHBHon" CTaAin sbojuouib xo6oTHbixT> nopB. 3a yKa3anie na TanoByio a 

 cqHTaw totb cjiyiaS, Koryia Me30AepMajibHbia He^pHAiajibHbiH bopohkh HenocpeACTBeimo OTKpbi- 

 BawTCH Hapyacy, t. e. 6e3B noiwomn 3KT0AepMajbHbixB KanaiOB-b. 



9to ecTb, necoMH'BHHO, caMaa nepBniHaa craAia ^HjroreHeTaiecKoo An<i>*epeHu,npoBKn 

 MeTaHe*pnAifl — oua Bnojiut cooTBBTCTByerb antenephros'y LUnMKeBnqa. 



TaKHMi o6pa.30»n> a cwraio sKTOAepmajibHbie Kanajibi He#pHAieBB Enteropneusta 3a hobo- 

 o6pa30BaHie. Ha nepEbixij CTaAiaxi, 3BOJUon,iH opraua, ohb, BtpoaTHO, cocToajn. TOJbKO n3T> 

 Me30AepMajibHoii bopohkh, KOTopaa npnxoAHJia bb conpHKOCHOBeuie ct> napyatHbiMH noKpoBamn 

 xoSoTa h npopbiBajiacb napyacy (pnc. 63, A). 



CrtAyiomaH CTyneHb ocjioaweHia B^CTpoeHin oprana 3aKjnoqa.iacb bt>tomT), «ito Ha cnnn- 

 hoh CTopoHB xo6oTa o6pa30BajiHCb ABa, CHMMeTpnqHO pacnojoateHHbia SKTOAepiuajibHtia Bnaqn- 

 BaHia, bt> KOTopbia n CTajie OTKpbiBaTbca BopoHKn ne*pnAieBB (pnc. 63, B). 



Btj AaJibH-EHuieMij o6a sKTOAep&iajibHbixi MBtneiKa 0Ka3a;incb CMtuieHBbiMH Ha Ano OAiioro 

 oSmnpHaro yrjiySjieHia SKTOAepMbi, Hrpawmaro pojib atrium (pnc. 63, C). 



TaKHMi> o6pa30»n> Ha stoh CTaAin KaatAaa nepnTOHeajibHaa Boponna OTKpbiBaeica oco- 

 CbiMT> OTBepcrieM'b m> 3KTOAepMajibHbifi atrium, ho coo6ra,eHie nocxfcAHaro ch Hapyatrioa cpe- 

 Aofi noAAepJKHBaeTca .iHmb npn noMom,H OAHoro MeAiaHHaro OTBepciia — nopbi. 



Hcho, qTO nopa axa Mop^ojioraqecKH othwab He cooiBBTCTByeTT. bbiboahoh nopi He*poAia. 

 He*pnAiajibHbia nopbi HaxoAHTca Ha stoh CTaAin BrjiyoHH-fc atrium'a. 



