HAEJUOflEHia HAfl-b JIPOH,ECCOMT> PErEHEPAU.Hl y ENTEROPNBUSTA. 



105 



CoBepmeHHO aHajiornqHwa Kapranbi Mbi HaxoAUMi, h npn 3M6pioHajir,uoMT, pa.3BHTin. Tain,, 

 nanp., Ha piicyHK* Mopraaa (Morgan, 92, pi. XXVIII, fig 58), moCpaaaiomcMT, paspfcn! 

 qepe3i> BopoTHUKi, TOJibKo q-ro o6pa30BaBLuaroca h3t> Tornaria-Balanoglossus, mm bhahmt, coBep- 

 uieHBO TaKoe a<e CTpoeeie HepBa. BepxHaa rataa TpyfiKH pfeico OTJinqaeTca rncTOJioraqecKH 

 on. HHJKHefi h npeACTaRjaen, h3t> ce6a TtinHHHbiH HeH3WBHeeHbifi anHTejift, Tor^a nam unatHiij 

 cjioh yate AH**epeHn,HpoBaHt bt> HepB*b. 



He cmotph Ha bce sth AaHHbia a He Bnacy, OAHano, oceoBauin ne npHAaBa-rb Mop-ixxiore- 

 qecKaro 3Haqema TOMy BaaraoMy oGcTOflTejibCTBy, qio oopomuuKoeuu nepet o6pa3ijemcH nymem 

 uueaiuuauiu ua dop3aAbuou cmopourb oKueommio. 



MdK-h Epafifli (Mac Bride, 94) h Apyrie aBTopbi coBepiueHno cnpaBeAJiiiBO yKasbi- 

 Baton,, qio b*ab h npa pa3BHTin Amphioxus dpohcxoahtt, norpyateme BHyTpt ywe o&pasooao- 

 weucH, ducpcfiepewuupoeaHHOu uepeuou nmcmuuKu. 



Mh* KaateTca, H^KOTopbiH Heiepecb iworyrb npeACTaBHTb moh HafaroAema HaAi, OAnnwb 

 aHOMa^bHbiM'b 3K3eMnjiapoMT> Ptychodera minuta, y KOToparo He TOJibKo bt. oftjiac™ BoporaHKa, 

 ho h btj odLnacra TyjoBHma HepBHaa njiacTHHKa 

 HaxoAHJiacb hoatj Koacen, t. e. HHBanmaHia pac- 

 npocTpaHMacb cl BoporanKa Ha TyjiOBHme. 



CnepBa mh-b Ka3a.aocb B03MoatHhMTb TOjwoBaTb 

 dTOTb cjiyqafi bt> tomt, CMbicjpfc, qio y Enterop- 

 iieusta yace BbipaateHa TeHAeHn,ia kt, pacnpocipa- 

 Hemio HHBarHHan,iH Aop3ajibHaro HepBa Ha Tyjio- 

 BHmHyio qacTb rfejia, ho Tenepb a AyMaio, q-ro 

 3Atcb mh msfcewb a'bjio cb npocTOK) ciyqaHHocTbio. 



06para,aio, MeacAy npoqHMT,, BHHMaHie Ha to 

 o6cToaiejibCTBO, qio h y HopMa.nbHbix'b ocoSefi bi 

 TyjioBHm.HOM'L ceriaeHTt HepBi, stott, HHorAa Jie- 

 atHTT> Ha ah^ 6ojTEe hjih Mefffce acHO BbipaaceHHaro 

 atejioSKa. EcTb h em,e oaho yKa3aHie Ha cjyqafi- 

 HOCTb HBJieHifl, a HineHHo — HHorAa cjiyqaeTca na- _ n , . „ 



' Phc. 64-h. nonepeiHmi pa3pTB3x Hepe3t neieHoi- 



6jIH)AaTb HHBarHHaHlK) He TOJIbKO A0p3a.UbHar0, HO Hyio oSjiacTb (hp) anoMaiBHaro 3K3ewnjiHpa Ptycho- 

 dera minuta, y KOTopoii BeHTpa.ii>Htiii HepB-b Tyao- 

 H 8eHMpOiAbHaiO HepBa TyiOJIOBnma. BHma norpywein. noA't Kowy. vn — AopsaatHuii, 



Ha pnc. 64-mt, H306paace H %, MeacAy npoqHM-b, dn ~ »c="P"««» ™v™- Zeiss Obj. 35, ocnl. 4. 

 nonepeqHbiH pa3pt3Ti qepe3i> TyjiOBime OAHoro 



xaKoro 3K3eiwnjiflpa Ptychodera, npomeAmiH bt> oSjiacra neqenoqHbixi npHAaTKOBi,. Msi BnAHM"b, 

 qro 6pH)mHOH HepB"b HaxoAHTca noA'b Koatefi, KOTopaa Hapocjia HaA^ hhmt. ct> Sokobi. Bi ata6ep- 

 hoS oSjiacra 3Toro atHBOTHaro HHBareHaHioHHbin a;ejio6oKT> npeACTaBJiaji'b yaie C06010 Tpy6Ky. 



3»n. *as. -Mai. Ota. 



14 



