— 226 — 



HHasHifi- — Hia6epHHiH opraa^L. Sa^HTOKTb SoKochiKt opranoBi. Ha At 

 rioM^tHOM ;i,yroH jih^tl Haqajio Gokobumł oprauaMt iiepeAHeii oO- 

 jiacTH rojiOBH; Mst sauaTKa H'dji,'b nepBon m BTopoH jKaOepiiLiMH 

 ;i,yraMH oOpasyroTca óoKUBBie opraHH TeMaHHofi o6jiacTii; ii3t. aa 

 uaTKOBij Haj^t ocTajibHHMH — 6oKOBhie oprane TyjioBMma. Ta- 

 KHMŁ oópaaoMij iiepBMqHoe H«a6epHoe yTOJiinenie na ypoBHt xop- 

 JI.U, BH^-fejiuBt Hsi. ce6a co5cTBeHH<> HtaoepuMe opraaw, iipeA- 

 cTaBJiacTt i;eHTp'L pasBHTia jiJia BC'fex'b 6okobbix'b opraiiOB-b, ot- 

 Ky^a OHM paspocraiOTca Bnepejt-L, ki. CHMH-fe m Hasajii.. Okojio 

 yiUHaro nysHpa ohm pacTyrt Ha HeóoJiBmoMi HporaateHiM, ro- 

 pa3;to AaJibiue Bt nepe^tnefi qacTu tojiobm h eme ^aJituie aa Ty- 



JIOBHm-fe. 



HcHoe o6oco6jieHie cjiyxoma6epHaro yTOJimcHia oTt oomaro 

 qyBeTBHTejibHaro, panno KaKt u ctojił nojinoe u xopoiuo Bbipa- 

 jKeHHoe pacqjieHeHie ero Ha cjiyxoBOH oT^fitji-b, łKa^epHBie n 60- 

 KOBfcie opraHM bł tou ^opMt, KaKB 9T0 npe;tcTaBjieHo naMU y ce- 

 jiaxiH, ;i,jm ;i,pyrHxi. Ichthyopsida e;iBa jjh MoryTt óhiTb yna^a- 

 Hhi. Bt óojiBUJHHCTB-fe cjiy^aeBt nei)e;i.Hiii oTjttjii. tojiobłi upe^- 

 CTaBJiflCTt MCHŁUjee pasBHTie, n-hwh y cejiaxin, a noTOMy h iiya- 

 CTBHTejiŁHoe yToJimeflie ero b-b uepBMąHOH oopMi MeHbiiie oTA'fe- 

 jiaerca oti> cjiyx()?Ka6epHaro; rMCTo.iiorHqecKia sapaKrept ;;H**e- 

 peHH,MpoBKn paBHiJMt o5payoM'L BHpaźKaerca He ctojib oupeA'fe- 

 jieHHo, T-feMt He Mente bi. pasBHTiM KaźKAon tiBt M3yiieHHbixi. 

 HaMH rpyiMii. moh^ho yKa3aTb cyui,ecTBeHHbia qepTbi AH«i)*epeu- 

 u,HpoBKid uyBCTBHTejibHaro 3nMAepiVjiiqecKaro yT0jiuj,euia , koto- 

 pbia iipe^cTaBjjHiorb hojihoc cx()Ji,ctbo cb ouhobhmmh *aKTaMH 

 pac^Jienenia ero y cejiaxiH. 



TaKT> y Cyclostomi cJiyxoaia6epHoe yrojimenie Majio BWiit- 

 jiaeTca ust o6maro uyBCTBkiTejiBHaro; ho nocni oóocoójieuia cjiy- 

 xoBaro ny3upa nepe^tma qacTB ero noJiy^aeTi. caMOCToarejib- 

 HOCTb H, cooTB'feTCTBya, iio BceMy B-fepoaTiio, yTOJimeHiio riow;!.- 

 Hoii JtyrH, jtaeTi) ua^ajio fojiobuhm^ óokobumi, opranaMt; 3a;t- 

 Haa qacTb, oÓHHMaiomaa ataóepHyio o6jiacTb 3a yxoM'b, npoii3BO- 

 j[i.HTi> 5oKOBbie opraHij TyjioBMuj,a. KapTMaa paciipeA'feJieHia óoko- 

 Bex'B opranoBt y Petromyzon ne raKTb jteTajrbua h oapeA'feJienua, 

 ftaKt y ce;iaxifi, a noTOMy Tpy;i,H0 npoBecTM 3A'fecb oojiie hoji- 



