HAEJIIOpHIfl HAAt nPOnECCOlTL PErEHEPAHM y enteropneusta. 91 



«is that the anterior hodycavity of Balanoglossus may primitively have been a paired struc- 

 ture, and that this sac (t. e. nepnKapAiii) may be a member of the pair and the degenerated 

 felow of the proboscis cavity» (Bourne, 1889, dp. 6G). 



IIlneHrejib (Spengel, 93) BcenLio npncoeAHHfiexcH ko MHiHiw Bourne h cqnxaexi. 

 Herzblase 3a pyAHMeHiTi npaBofi nojiOBniibi nejioMa xo6oxa. Ero HHiyra He cinymaerb T0 

 o6cTOflTe.ibCTBO, qxono ero ace mhbhho 3xoxb Herzblase B03nnKaex , bH3'b3KX0AepMbi,x. e.coBcfcurb 

 iieoSbiqiitiMt n,ia ociajibabixt nejiOMOBi Enteropneusta nyxewb. Bourne, Koxopbiii xoate cqn- 

 xajn> nepnKapAiii 3a npon3BOAnoe aKxoAepmbi, bhabju. B^ 3xomt> oScxonxejibCTB'E Sojibinyro npe- 

 rpaAy AJm CBoeii rnnoTC3bi. «The development of a mesoblastic pouch as an invagination of 

 the ectoderm», roBopnrb oin,: «lands us in a great morphological difficulty)). 



ripoHcxojKACiiie 9Toro oprana ocxaBa.iocb ao cero BpeMenn 3araAoqiibiiin>.. Bo BCflKOMT> cjy- 

 qah 3M6pionajibHoe pa3Bnxic onpeA'b\neniiaro oxBixa na 3xoxt> Bonpocb ne AaBa.no. H3cnbA0Ba- 

 iiin BaTcona (Batcson, 85, 86) n M oprana (Morgan, 91, 92, 94) Bbmcnnin, hto iiepn- 

 KapAiajibHbiii uysbipemb nponcxoAm-b n3% Me.3eHXHMajibnbixT) iut/rom,, ho nn oAiwb 11311 3thxt> 

 H3CJi'hAOBaTe.iieH ne HaftjnoAaxb cbh3h 3xhxt> kjtbtokT) ct> n,ejiOMOMi. 



EAHHCTBeHcoe Aona3aTejibCTBO rnnoTe3bi HlHMKeBnqa Aaerb nann, nponeccb pcreHepa- 

 nin — npn perenepanin, nam Mbi bhabjih, iiepnKapAiajibHbM ny3bipem, o6pa3yexcn nyxeni-b 

 OTui,enjieHifl oxt> nejioiua xo6oxa. 



ynoMHHaio o6 r b 3tomt>, MeatAy npoquurb, em,e n noxoiviy, qxo6bi juimHin pa3i> o6paxnxb bhh- 

 MaHie Ha 3Haqeme royqeHia pereHepau,ia jujm BbiacneHia oprauoreHesa, noAqacb ne noAAaioma- 

 rocfl H3yqeHito Apyrnun nyxaiuH. 



TaraM-b o6pa30nrb, AaHBbin, nojryqeHHbia nyxenn. n3yqenia pereHepanin, bt> cbh3h ct> Mop- 

 ^ojornqecKHMH ocoSeeHOCxaivra opraua, a xaKate cpaBHeHie ero ct> roMOJoniqHbiM'b o6pa30Ba- 

 mewb y Pterobranchia, Bee bi coBOKynHOcxH He ocTaBjmerb coMH'EHia bx xomt>, qTO t. na3. 

 «Herzblase» UlneHrejiH eerb Hacxonm,iii neioin-b. 



Bt. TaKOsn, CMbicxh h <i>opMyjmpyK>T'b 3Xon> BonpocT>H,nrjiep , b bt> CBoeft n3BT>cxuon cxaxbfe 

 nevoid; (Ziegler, 98 CTp. 55) 11 Jlann, (Lang, 02) bt, cbohxx: «Beitrage zur einer Hilmo- 



coeltheorie». 



«Die sogennante Herzblase in der Eichel von Balanoglossus hat mit einem Herzen 

 nichts zu thun, sondern ist cine unpaare (urspriinglich paarige?) Colomblase, die durchhaus 

 dem Pericard der Mollusken und Tunicaten entspricht» (cip. 350). 



TaKHMi> oopasoM-b bt> xo6oxfc Enteropneusta nM'fcEOxen Aba nejoMnqecKnxi, o6"pa30Baiiifi : 

 1) coocTBeimo nejiowb, cooSmaiomiiicn ct> napyacaoft cpeAoii, n 2) aaHKffyr&iH ny.ibipcm.— 



iiepnKapAin. 



HBjaexca Bonpocb, bt> KaKourb oraomcHin HaxoAaxca ohh Apyr* kt> Apyry. 



H yace npuBOAnJix Mirfcnie na btott, caerb Bourne n III 11 e arena. Ho nxi npcAuo.iojKe- 

 Hiw nepHKapAin A<uwein> pa3CMaxpnBaxi>cn, nam, OAna n3i pcAynnpoBaBinnxen iiojobhh-i, nep- 

 BOimqajbiio napuaro nejiowa. 



3xa rnnoxesa, pascMaxpnBawinaa uepnKapAifi Enteropneusta, rain, pyAHMearb npaeaio 



12* 



