HABJUOAEHIfl HA^T. nPOnECCOMl PErEHEPAHIH y ENTEROPNEDSTA. 75 



TaKT>, noqra 40 jtetl rouy Ha3aAT> MeyHHKOB-b (Metschnikoff, 70) HaGjiiojiajii stott. 

 npou,eccb h KOHCTaTnpoBaji-b, qio HtaSepHbie m-eidkh mojioaofo Balanoglossus npeACTaBJifnon. 

 C06010 BbiriflqHBamfl nnmeBOAa. 



Kt> xaKOMy 3Ke saKjnoqeHito npnmejn, h AraccHa,^ (Agassiz, 73), H3yqaBnrin Tornaria 

 agassizii. 



y 3toh jinqHHKH em,e bo BpeMH iiejaraqecKofi jkh3hh o6pa3yK)TCfl neTbipe HtaSepHbixi 

 wtuiKa, KOTopbie AOJiro He npopbiBawTcn Hapy«y. Onncame Araccnrja qpe3Bbnanuo cacaTo 



H flCHO. 



ABiop-b roBopHTi, qio Ha nepBbix-b CTaAinxi CBoero o6pa30BaHia ata6pbi npeACTaBjaiorb 

 H3i> ce6fl cKmdnu ctehkh nnm,eBOAa a ). 



H^CKOJibKO HHaie onacbiBaerb btoti nponeccb LLIneHrejib (Spengel, 93). 



IIo IIIneHre^io (Spengel, 93), Ha6jH0AaBineMy pa3BHiie JKaSepHbixx MtinKOBT. y T. 

 midleri, nocjiEAnie B03HHKaiorb He bt> bha^ ciuaAKH, a bt> bhat. cjiinbixi «sackformige Ein- 

 stiilpungen» (cTp. 404 — 405). 



KaKHiui. o6pa30M"b o6pa3yK)TCfl JKaCepHbia nopbi y Tornaria, aBTopi He onacbiBaerb — 

 cA'BJiaTb KaKHXij HHSyAb HaGjnoAeHin Ha btott. cierb eiuy He. yAajiocb. 



Oqenb n-BHUbiH AaHHbia OTHOcnTeibHo nepBbix-b nponeccoB-b AH**epeHn,HpoBaHiH aca6ep- 

 Hbixi. M'BUJKOB'b HaxoAHMi. Mbi y MopraHa (Morgan, 92). 



CpaBHHBaa pe3yjibTaTbi HaGjnoAemii Bcix-b BbimeyKa3aHHbixT> H3cxEA0BaTejien, pa6oxaB- 

 niHXT. HaA^ 3M6pioHaJibHbiMx pa3BHTieiw^ Enteropneusta, c-b t/bmh Ha6jK)AemHMH, Koropbifl mht> 

 yAajiocb CA^JiaTb OTHOCHTejibHO o6pa30BaHia acao'epHbix'b MiinKOB'b y sthxtj jKHBOTHbix'b npn 

 pereHepanju, Hejib3fl He npnTTH kt> TOMy 3aKJiioqeHiEO, tto ez dauuoMz cjiyuatb mu euduMz noji- 

 Hoe coometbmcmeie Meotcdy opiaHOieue30Mz peieuepamuemiMz u oumoieuemuHecKUMz. 



Ctohtt. nocMOTp'BTb Ha pHC. 41 PI. XXVI MopraHa, qTo6bi y6fcjwrbCH bt> nojiHOMT. 

 cooTBiTCTBin nponeccoBT> oo"pa30BaHia ata6epHbixi> iwbuikobt. npa pereHepanin h OHTorenin. IIobh- 

 AHMOMy, npHBeAeHHbia MopraHOMi. npenaparb hu nrbMz He OTJinqajica ott>mohxt>. Moh pucyHKH 

 Cb oAHHaKOBbWb ycn'BxoMT) MorjiH 6bi HJunocrpHpoBaTb onncame MopraHa, Kacawmeeea npo- 

 u,ecca 3M(5pioHajibHaro pa3BHTifl JKaSpi), paBno Kan-b ero pncyHKH Smjjh 6h bhojwe npnroAHbi ajih 

 AeMOHCTpanin o6pa30BauiH acaopi npn pereHepan,in. 



CKGJieT'B xo6oTa. 



IIpoHCxoffiAeBie Taiu> Ha3biBae.Maro cnejieTa xo6oTa — Bonpocb AOBOJibHO TCMHbiS h, moh;ho 

 CKa3aTb, 3M6piojiorHqecKH ao chxt> nopx He pEiuenHbifi. Ha stotx c<ieTT> BbiCKa3biBajicn phat> 



1) «The gills are at first simple slight folds, one of 

 each side of the dorsal part of the oesophagus ; the folds 

 gradually change into loops, then we have a series of 

 folds, and subsequently a series of four loops, and finally, 



when seen from the dorsal side, the loops appear closed, 

 forming a set of four funnels on each side, opening into 

 oesophagus». (Agassiz, 73, CTp. 427). 



10* 



