HABJHO^EHTJT HA At nPOnECCOMt PErEHEPAHIH Y ENTEROPNEUSTA. 



85 



3aKOHqHJicfl, yAaeTCH HaxoAHTb 3K3eMnjapbi ct> AByiua ne'i>pHAiajibnbiMn, cnMiweTpnqno pacno.no- 



HCeHHblMH, DOpaMH. 



HeOAHOKparao HaxoAHjrc. a n Tame 3K3eMHJiapbi, y KOTopbix'B 6biJia Bcero OAHa MeAiaimaa 

 nopa, BeAym,aa bt> oSiunpHbiii sKTOAepMajibHbiii atrium, ho bt> nocirfeAHiH OTKpbiBaeica no 

 oxawb, a 06a TjeJioMaqecKHx-B wfeuiKa. (Pnc. 58-fi). 

 rioAo6Hbie cnyqaa BafijiiOAaJincB 



UJneereJieM'L n y HopMa.ibHBix'B Pty- 

 chodera minnta. 



KaKi. a nonaacy HeMHoro Hnace, no- 

 Ao6"Hyio CTaAiw 3BOJiK>n,in, no Been B-fe- 



pOflTBOCTB, H64>p0Ain npOXOAHJIH H BT> 



<i>njioreHe3'fe. 



MHTepecHO, qTo He*pnAiajiBHBiH 

 annaparB y Ptychodera minuta Aaace 

 npn HOpiwaibHOMi oHT0reHe3 r B o6aapy- 

 HtHBaerb, KaKi> mbi BHAiJin, HeycToifon- 

 boctb. CjryqaH o6pa30Bama AByx-B ee- 

 *pHAifi bm'bcto OAHoro na6jii0AajiHCb, 

 KaKt 6buo Bbirae ynoMaHyTO, h y Apy- 

 raxT> Enteropneusta, ho Kpairae piAKO 

 h bo bchkomt> ciyqa'fe ohh Aa.ieKo He 



P 









.coel. 



i ,- 



nth'' 





■ . :< 

 ■>1& 



cdelf 



Phc. 58-fi. IIonepeHHbifi pa3pi3i> iepe3t xo6ott> pereKepnpyio- 

 mefi Ptgchodera, bt> tomt. mect-e, rat out. coeAMHHeTca ci> bo- 



TaKT, 06blAeHHbI, KaKT> y Ptychodera pothhkomt,. pre — Kapjuo-nepHKapAiH; coe\ — neJiOMi. xo6ora; 



coel 2 — uejioin. BopoTHHKa; p— He<j>pH,n,iajibHaH nopa, Be^yman bt, 

 minuta. atrium, ityAa oTKpuBaiOTCfl 06a xopaoaaTcpaatHbix-i, MtuiKa. Leitz 



Obj. 2, ocul. 2. 



3to Mh-b KaateTca, ciyacnrB AOKa- 

 3aTejibCTBOM , b Toro, ito *opMa 3Ta em,e 

 ne bhojih'B ycTaHOBHJiacb. 



2-u caynau. Kt> npoaBJieHito aTaBH3Ma nyatno OTnecra, Meatfly npoqnM-B, cayqan o6pa30- 

 BaHia npa pereHepauin xoSoia TOJibKO Me30flepMajiBHBix'B qaciefi He*pnAieBT,. Hopiuajibno, Karn, 

 H3B-ECTH0, nejioMnqecKiii Aop30JiaTepajibHbin m-eihok-b OTKpbiBaeTca He npaMO Hapyacy, a bt> 

 cneuiajibHbin sKTOflepMajBHBin KaHajt. IIpn pereHepanin 3aqacTyw 3Toro aKTOflepiiajbearo 

 yqacTKa He4>pnfliH He o6pa3yeTca BOBce h HeJiOMT, oTKpbiBaexca nenocpeACTBeHno Hapymy 

 (cm. pnc. 40 h 41). H coBepmeHHO cor-iacem, ct> MffEHieM-B IIlnMKeBHqa (ninMKeBnqT,, 05), 

 KOTopbifi noAoSHyio *opMy He*pnAia cqnTaeTi, 3a npocrMmyio h iiepBHqHyw («antenepliros» 

 no TepMHHOiorin aBTopa). IIoaBJieHie He*pHAia npn pereHepanin xo6oTa bi, bha-b autenepliros 

 HyatHO, pasyM^eTca, cqHTaTb 3a aTaBH3MT>. 



TaKoe ace TOJiKOBaHie aoji>kho 6biTb npnjioaceHO h ki *aKTy o6pa30Baaia nnorAa npn pere- 

 HepaHin THnnqflbixt, xoponio o6oco6jieHHbix'b, nepnTOHeajbHbixi. He*pHAia.ibHbixi BoponoKi, 

 (pnc. 37), He 3aKJiaAbiBaioinnxcH, KaK-b mbi bha^jih, npa 3M0pioHa^bHOMi pa3BiiTiH. 



3-w CMftaik. Kx qncjiy cjiyqaeBi npoaB.ieBia aiaBH3Ma npn pereHepauin a OTiioiny, moka}' 



