84 K. H. AABHA0BT>, 



AepMiiiecKaro KaHaia, cooSmema ace 9Toro KaHajia cl n.ejiOMOM't He 6buo. dyqan 3tott> (Ha- 

 cKOJbKO cnpaBejiJiHBo — Bonpoct Apyrofi) aBTopi cqnTaerB oahhmt> h3t> *aKTOBx, A0Ka3biBaK> 

 mnxij 3KTOAepMHiecKyio npnpoAy Eicbepforte Enteropneusta (dp. 685). 



Kt. iHCJiy Ha6jK)AaBinnxca aHOMajiifi npn pereHepauin, KOToptiMi a npHAaio MoptoJiorn- 

 qecKoe 3Haqenie n ncrojiKOBbiBaio bt> CMbicrfe aiaBH3Ma, mojkho othccth crkAywurie : 



1) Cjyian B03CTaHOBJieHifl He OAHoro, a AByxT> He*pnAiajbHbixT> KanajiOBT,, cl ABynia 



BblBOAHblMB HOpaMH. 



2) OTcyTCTBie aKTOAepMaibuaro Kanajia bt> pereHepHpoBaBmeMi, ne^piiAii xoSoia. 



3) 06pa30Banie AByxi> nepnKapAia.ibHbix'b ny3bipen, bm-ecto OAHoro. 



4) Cjiyian coeAHHema hojiocth, Taieb na3biBaeMon, HOTOxopAbi ct> HapyatHofi cpeAofi npn 

 noMomn cneniajibHofi nopbi. 



5) 06pa30BaHie BAOJib cnnHHon CTopoHbi nnmeBOAa bopothhkoboh hotoxopam, bt> bha^ 

 jKCioSKa (TaKi> na3biBaeMon «Supraoesophageal notochord»). 



1-uu cjiyuau. Kairb H3B"£cTeo, y orpoMHaro SojbuinHCTBa Euteropnensta cymecTByerb 

 .unuib OAHa xoGoTHan nopa — TOJbKO jfeBbin uejoMHiecKin ABBepTHKyji. xo6oia cooGmaeTca ct> 

 Hapyatnon cpeAofi npn noMom,n sKTOAepMnqecKaro Kanaka, um jyuue CKa3aTb, atrium'a. Ilpa- 

 Bbin Aop30jaTepajibHbiH ueioMnqecKin mbujo^ oSbiKHOBeHHo KOHqaeTca cjitno. 



TaKi. o6cTonrb A'BJio y 6ojbuien qacni npeACTaBHTCneH Enteropneusta. HcKjnoqeme npeA- 

 CTaBJiaioT^ HECKOJibKO *opM"b, y KOTopbixi, o6a Aop30JiaTepajbHbie MfciuKa coooruatoTca ci> 

 napyjKHofi cpeAofi — sth *opivibi oojaAaiorb ab}'mh nopajin. 



Kt> TaKHMi) Enteropneusta npiraaAJiercaT'L upeACTaBHTeie ceiu. Harrimaniidae (H. macu^ 

 lata Ritter h H. kuppferi Willemoes Suhm), Ptychodera jamaicensis Willey, Pt. flava Ecb. 



Mbi bt> npaB-fc pa3CMaTpHBaTb sto flBJienie naicb nepBH^Hoe — cyniecTBOBanie AByxi. ne<ppH- 

 AieBT>, uecoMH-EHHO, ecTb najinnreHeTHqecKaa qepia oprannsauin. BojbnrancTBo Enteropneusta, 

 oieBHAHO, yipaTHJin oahht, He*pnAin. HiueBHO npaBbifi. 



Kt> qncjiy Tannxx •sopM'b npHHapeasarb, iuea<Ay npo^nMi, n bcb B3CJitA0BaeHbie mhoio bhabi. 



HopMa.nbHO y HnxT> mm HaxoAnMi. TOJibKo OAHy itByio nopy xoGoia. 



BnpoqeRrL, y Ptychodera minuta GbiBawrb ciyqan HaxoacAema Tannx-L 3K3eMHJiapoBTi, y 

 KOTopbixi. He TOJibKo JiiBbin AopsojaTepajibHbin nejoMnqecKra RrfemoK'b OTKpbiBaerca Hapyacy 

 (qTO cocTaBJiaeT-b am 3toh «i>opMbi HopMajibHoe HBJiede), a oGa — h JifeBbm h upaBbifi uejoMme- 

 CKie AHBepTHKyjibi naxoAaTca bt> cooGmeain ch Hapy>KHon cpeAoa nocpeACTBOMx AByxi, cnM&ie- 

 TpniHO pacnojioaceHiibix-b nopi. Tairie ace cjiyqan HaGjnoAajiHCb H3pfeAKa y Balanoglossus kowa- 

 lewskii (Morgan, 92). 



HeCOMH'feHHO, 3AtCb Mbi BM^erL A&tfO Cl aTaBI13M0M'b. 



TIoAoGabie a^e cjiyqan aTaBH3»ia mht; yAajiocb He oAnoKpaino naSjEOAaTb y Ptychodera 

 minuta (a TaKate oabht. pa3i y Pt. clavigera) npn pereHepauin. Bi perenepnpyiomeM'b xooort 

 3aKJiaAbiBaK)TCH ab6 He<i>pHAia^bHbia BopooKn Ha cjiinbixi) KOHnaxii Aop30JiaiepajibHbix^ wkm- 

 kobt> h o6pa3yeTca, cooTBiTCTBenHO sToiwy, ABa aKTOAepMBqecKnxi. BnaqaBania Kb CTeGe.abK'L 

 TaKHMi. o6pa30Mi. cpeAB a5HBOTHbixT>, y KOTopbix-b npoqeccb pereHepauin xo6oTa yace BnojiHL 



